ACS37002LMABTR-050U5

ACS37002 ALLEGRO | Alldatasheet

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Technical content

The ACS37002 is a fully integrated Hall-effect current sensor in an SOICW-16 package that is factory-trimmed to provide high accuracy over the entire operating range without the need for customer programming. The current is sensed differentially by two Hall plates that subtract out interfering external common- mode magnetic fields. The package construction provides high isolation by magnetically coupling the field generated by the current in the conductor to the monolithic Hall sensor IC which has no physical connection to the integrated current conductor. The MA package is optimized for higher isolation with withstand voltage, 4.8 kVRMS, and 0.85 mΩ conductor resistance. The LA package is optimized for lower noise with 3.6 kV RMS withstand voltage and 1 mΩ conductor resistance. The ACS37002 has functional features that are externally configurable and robust without the need for programming. Two logic gain selection pins can be used to configure the device to one of four defined sensitivities and corresponding current ranges. A fast overcurrent fault output provides short- circuit detection for system protection with a fault threshold that is proportional to the current range and can be set with an analog input. The reference pin provides a stable voltage that corresponds to the 0A output voltage. This reference voltage allows for differential measurements as well as a device-referred voltage to set the overcurrent fault threshold. ACS37002-DS, Rev. 3 MCO-0000900

• High operating bandwidth for fast control loops or where high-speed currents are monitored □ 400 kHz bandwidth □ 2 µs typical response time
• High accuracy □ 1% maximum sensitivity error over temperature (K series) □ 6 mV maximum offset voltage over temperature □ Non-ratiometric operation with VREF output □ Low noise LA package ◊ 160 mVRMS for 3.3 V supply ◊ 124 mVRMS for 5 V supply □ Differential sensing for high immunity to external magnetic fields □ No magnetic hysteresis
• Adjustable fast overcurrent fault □ 1 µs typical response time □ Pin adjustable threshold
• Externally configurable gain settings using two logic pins □ Four adjustable gain levels for increased design flexibility 400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 Package ACS37002 PACKAGE: 16-Pin SOICW (suffix MA/LA) Not to scale FEATURES AND BENEFITS DESCRIPTION December 16, 2020 Continued on the next page… IP+ IP+ IP+

4 IP+

5 IP-

14GAIN_SEL_1 15GND 16GAIN_SEL_0 MCU VCC ADC ADC GND Digital I/O IP ACS37002 VCC VCC RPU CREF CL CBYPASS RVOC(H) RVOC(L)CVOC Figure 1: Typical Bidirectional Application For more application circuits, refer to the Application and Theory section

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems

955 Perimeter Road

Manchester, NH 03103-3353 U.S.A. www.allegromicro.com SELECTION GUIDE Part Number (click number to go to Performance Characteristics) Current Sensing Range, IPR (A) Sensitivity [1] (mV/A) Nominal VCC (V) Optimized Temp. Range TA (°C) Packing [2] ACS37002LMABTR-050B5 ±33, ±40, ±50, ±66 60, 50, 40, 30 –40 to 150 1000 pieces per 13-inch reel ACS37002LMABTR-066B5 ±66, ±80 ±100, ±133 30, 25, 20, 15 ACS37002LMABTR-050U5 33, 40, 50, 66 120, 100, 80, 60 ACS37002LMABTR-066U5 66, 80, 100, 133 60, 50, 40, 30 ACS37002LMABTR-050B3 ±33, ±40, ±50, ±66 39.6, 33, 26.4, 19.8 3.3 ACS37002LMABTR-066B3 ±66, ±80, ±100, ±133 19.8, 16.5, 13.2, 9.9 ACS37002LMABTR-050U3 33, 40, 50, 66 79.2, 66, 52.8, 39.6 ACS37002LMABTR-066U3 66, 80, 100, 133 39.6, 33, 26.4, 19.8 ACS37002KMABTR-050B5 ±33, ±40, ±50, ±66 60, 50, 40, 30 5 –40 to 125 [3] ACS37002KMABTR-050B3 ±33, ±40, ±50, ±66 39.6, 33, 26.4, 19.8 3.3 ACS37002LLAATR-015B5 ±10, ±12, ±15, ±20 200,166.6,133.3,100 –40 to 150 1000 pieces per 13-inch reel ACS37002LLAATR-025B5 ±25, ±30, ±37.5, ±50 80, 66.6, 53.3, 40 ACS37002LLAATR-015B3 ±10, ±12, ±15, ±20 132, 110, 88, 66 3.3 ACS37002LLAATR-025U3 25, 30, 37.5, 50 105.6, 88, 70.4, 52.8 [1] Refer to the part specific performance characteristics sections for Gain_Sel configuration. [2] Contact Allegro for additional options. [3] The device performance is optimized from –40°C to 125°C; however, the device can still operate to an ambient temperature of 150°C. The device shares the same qualifications as the L temperature devices unless otherwise stated. [4] Advanced information. LA package variation is not yet released. FEATURES AND BENEFITS (continued) □ Enabling measurement ranges from 10 to 133 A in both unidirectional and bidirectional modes

• Low internal primary conductor resistance 0.85 mΩ (MA) and 1 mΩ (LA) for better power efficiency
• UL60950-1 (ed. 2) and UL 62368 (ed. 1) certification, highly isolated compact SOICW-16 surface mount package (MA) □ 4.8 kVRMS rated isolation voltage □ 1097 VRMS / 1550 VDC basic isolation voltages □ 565 VRMS / 880 VDC reinforced isolation voltages
• Wide operating temperature, –40°C to 150°C
• AEC-Q100 Grade 0, automotive qualified ACS 37002 K MAB - 050 B 5 Supply Voltage: 5 – VCC = 5 V 3 – VCC = 3.3 V Output Directionality: B – Bidirectional U – Unidirectional Current Sensing Range (A) Package Designator Optimized Temperature Range L – -40°C to 150°C K – -40°C to 125°C

5 Digit Part Number

• ABC CB Certificate number: US-32210-M3-UL US-36315-UL MA Only

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com Table of Contents Undervoltage Detection Voltage Thresholds (VUVD(H/L)) .... 25 Overvoltage/Undervoltage Overvoltage and Undervoltage Overcurrent Fault Power Supply Decoupling Capacitor and

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com ABSOLUTE MAXIMUM RATINGS Characteristic Symbol Notes Rating Unit Forward Supply Voltage VCC 6.5 V Reverse Supply Voltage VRCC –0.5 V Forward Output Voltage VFIOUT Applies to VIOUT, VOCF, and VREF (VCC + 0.7) ≤ 6.5 V Reverse Output Voltage VRIOUT Applies to VIOUT, VOCF, and VREF –0.5 V Forward Input Voltage VOI Applies to GAIN_SEL0, GAIN_SEL1, and VOC (VCC + 0.7) ≤ 6.5 V Reverse Input Voltage VRI Applies to GAIN_SEL0, GAIN_SEL1, and VOC –0.5 V Operating Ambient Temperature TA –40 to 150 °C Storage Temperature Tstg –65 to 165 °C Maximum Junction Temperature TJ(max) 165 °C ISOLATION CHARACTERISTICS Characteristic Symbol Notes Rating Unit Dielectric Surge Voltage VSURGE Tested ±5 pulses at 2/minute in compliance to IEC 61000-4-5 1.2 µs (rise) / 50 µs (width) 10 kV Surge Current [1] ISURGE Tested in compliance to IEC 61000-4-5 8 µs (rise) / 20 µs (width) 13 kA Comparative Track Index CTI Material Group II 400 to 599 V [1] Certification pending. MA PACKAGE SPECIFIC PERFORMANCE Characteristic Symbol Notes Rating Unit Distance Through Insulation DTI Minimum internal distance through insulation 90 µm Dielectric Strength Test Voltage VISO Agency type-tested for 60 seconds per UL 60950-1 (edition 2) and 62368-1 (edition 1). Production tested at 3125 VRMS for 1 second in accordance with UL 60950-1 (edition 2) and 62368-1 (edition 1)

5000 VRMS

Working Voltage for Basic Isolation VWVBI Maximum approved working voltage for basic (single) isolation according toUL 60950-1 (edition 2) and 62368-1 (edition 1)

1550 VPK or VDC

1097 VRMS

Working Voltage for Reinforced Isolation VWVRI Maximum approved working voltage for reinforced isolation according to UL 60950-1 (edition 2) and 62368-1 (edition 1)

800 VPK or VDC

565 VRMS

Clearance Dcl Minimum distance through air from IP leads to signal leads 7.5 mm Creepage Dcr Minimum distance along package body from IP leads to signal leads 7.9 mm LA PACKAGE SPECIFIC PERFORMANCE Characteristic Symbol Notes Rating Unit Distance Through Insulation DTI Minimum internal distance through insulation 45 µm Dielectric Strength Test Voltage VISO Agency type-tested for 60 seconds per UL 60950-1 (edition 2). Production tested at 3000 VRMS for 1 second in accordance with UL 60950-1

3600 VRMS

Working Voltage for Basic Isolation [1] VWVBI Maximum approved working voltage for basic (single) isolation according to UL 60950-1 (edition 2)

870 VPK or VDC

616 VRMS

Clearance [1] Dcl Minimum distance through air from IP leads to signal leads 7.5 mm Creepage [1] Dcr Minimum distance along package body from IP leads to signal leads 7.5 mm [1] Certification pending.

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com PINOUT DIAGRAM AND TERMINAL LIST TABLE Terminal List Table Number Name Description 1, 2, 3, 4 IP+ Terminals for current being sensed; fused internally 5, 6, 7, 8 IP- Terminals for current being sensed; fused internally

9 OCF Overcurrent fault, open-drain

10 VCC Device power supply terminal

11 VOC Overcurrent fault operation point input

12 VIOUT Analog output representing the current flowing through IP

13 VREF Zero current voltage reference

14 GAIN_SEL_1 Gain selection bit 1

15 GND Device ground terminal

16 GAIN_SEL_0 Gain selection bit 0

10 VCC

11 VOC

12 VIOUT

13 VREF

14 GAIN_SEL_1

15 GND

16 GAIN_SEL_0

Figure 2: MA/LA Pinout Diagram

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com Figure 3: Functional Block Diagram Hall plates IP+ (1,2,3,4) IP- (5,6,7,8) Front Amp. OCF Threshold* OCF Comp. Back Amp. VREF Buffer OCF (9) VREF (13) VIOUT (12) VCC (10) GAIN_SEL_1 (14) GAIN_SEL_0 (16) VOC (11) GND (15) ACS37002 Digital OCF Filtering* EEPROM/ Digital Block Signal Path Control and Temp. Control Digital Regulator External Inputs External Outputs Analog Signal Path Digital Control *Further information in Theory and Application Section RIGS RIGS

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com Continued on the next page… Characteristic Symbol Test Conditions Min. Typ. Max. Units Supply Voltage VCC 5 V devices only 4.5 5 5.5 V 3.3 V devices only 3.15 3.3 3.6 V Supply Current ICC No load on VIOUT or VREF; VCC = 5 V – 13 18 mA No load on VIOUT or VREF; VCC = 3.3 V – 12 15 mA Supply Bypass Capacitor CBYPASS VCC to GND recommended 0.1 – – µF Output Resistive Load RL VIOUT to GND, VIOUT to VCC 10 – – kΩ Output Capacitive Load CL VIOUT to GND – 1 6 nF Reference Resistive Load RVREF VREF to GND (recommended to supply VOC); VREF to VCC 10 62.7 – kΩ Reference Capacitive Load CVREF VREF to GND – – 6 nF Fault Pull-Up Resistance RPU 4.7 – 500 kΩ VOC Capacitive Load CVOC VOC to GND – – 1 nF Primary Conductor Resistance RIP MA,TA = 25°C – 0.85 – mΩ LA,TA = 25°C – 1 – mΩ Primary Conductor Inductance LIP – 4.2 – nH Power-On Reset Voltage VPOR(H) VCC rising [1] 2.6 2.9 3.1 V VPOR(L) VCC falling [1] 2.2 2.5 2.8 V POR Hysteresis VPOR(HYS) 250 – – mV Power-On Time tPOD Time from VCC rising ≥ VUVD(DIS) after a POR event until power-on; VREF, OCF, VIOUT 100 – – μs Undervoltage Detection (UVD) Threshold [2] VUVD(L) TA = 25°C, VCC falling [1] 3.8 – 4.3 V VUVD(H) TA = 25°C, VCC rising [1] 4 – 4.5 V UVD Hysteresis [2] VUVD(HYS) – 250 – mV UVD Delay Time [2] tdUVD(E) Time from VCC falling ≤ VUVD(EN) until UVD asserts 35 64 120 µs tdUVD(D) Time from VCC rising ≥ VUVD(DIS) until UVD clears – 7 – µs Overvoltage Detection (OVD) Threshold VOVD(H) TA = 25°C, VCC rising [1] 6.1 6.3 6.8 V VOVD(L) TA = 25°C, VCC falling [1] 5.6 5.8 6.1 V Overvoltage Detection Hysteresis VOVD(HYS) – 660 – mV OVD Delay Time tdOVD(E) Time from VCC rising ≥ VOVD(EN) until OVD asserts 35 90 120 µs tdOVD(D) Time from VCC falling ≤ VOVD(DIS) until OVD clears – 7 – µs COMMON ELECTRICAL CHARACTERISTICS: Valid through full operating temperature range, TA = – 40°C to 150°C, CBYPASS = 0.1 μF, and VCC = 5 V or 3.3 V, unless otherwise specified

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com Continued on the next page… Characteristic Symbol Test Conditions Min. Typ. Max. Units OUTPUT SIGNAL CHARACTERISTICS (V IOUT) Saturation Voltage VSAT(H) RL = 10 kΩ to GND VCC – 0.25 – – V VSAT(L) RL = 10 kΩ to VCC – – 0.15 V Output Operating Range VOOR 5 V linear operating range 0.5 – 4.5 V 3.3 V linear operating range 0.3 – 3.0 V Output Current Limit IOUT(src) VIOUT shorted to GND – 25 – mA IOUT(snk) VIOUT shorted to VCC – 25 – mA Output Drive IOUT 4.8 – – mA Internal Bandwidth BW Small signal –3 dB, CL = 5.7 nF – 400 – kHz Rise Time tR TA = 25°C, CL = 5.7 nF, 10%-90% of 1 V output swing – 0.7 2.5 µs Response Time tRESPONSE TA = 25°C, CL = 5.7 nF, 90% input to 90% of 1 V output swing – 1.1 2.5 μs Propagation Delay tpd TA = 25°C, CL = 5.7 nF, 20% input to 20% of 1 V output swing – 0.7 2 μs Noise Density IND Input-referenced noise density; TA = 25°C, CL = 5.7 nF; VCC = 5 V Input-referenced noise density; TA = 25°C, CL = 5.7 nF; VCC = 3.3 V Noise IN Input-referenced noise at 400 kHz; TA = 25°C, CL = 5.7 nF; VCC = 5 V Input-referenced noise at 400 kHz; TA = 25°C, CL = 5.7 nF; VCC = 3.3 V Nonlinearity ELIN – ±0.75 – % Power Supply Rejection Ratio Offset PSRRO DC to 1 kHz, 100 mV pk-pk ripple around VCC = VCC(typ), IP = 0 A, change in VOE – –40 – dB 1 to 100 kHz, 100 mV pk-pk ripple around VCC = VCC(typ), IP = 0 A, change in VOE – –30 – dB Power Supply Rejection Ratio Sens PSRRS DC to 1 kHz, 100 mV pk-pk ripple around VCC = VCC(typ), IP = IPR(MAX), change in Sens – –15 – dB 1 to 100 kHz, 100 mV pk-pk ripple around VCC = VCC(typ), IP = IPR(MAX), change in Sens – –6 – dB Power Supply Offset Error VOE(PS) VCC @ VCC(MIN) or VCC(MAX) –10 – 10 mV Power Supply Sensitivity Error ESENS(PS) VCC @ VCC(MIN) or VCC(MAX) –1.5 – 1.5 % Common-Mode Field Rejection CMFR Input-referred error due to common-mode field – 4 – mA/G COMMON PERFORMANCE CHARACTERISTICS (VIOUT): Valid through full operating temperature range, TA = – 40°C to 150°C, CBYPASS = 0.1 μF, and VCC = 5 V or 3.3 V, unless otherwise specified

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com COMMON PERFORMANCE CHARACTERISTICS (VREF, FAULT, GAIN_SEL): Valid through full operating temperature range, TA = – 40°C to 150°C, CBYPASS = 0.1 μF, and VCC = 5 V or 3.3 V, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ. Max. Units REFERENCE OUTPUT CHARACTERISTICS (VREF) Zero Current Reference Voltage VREF(BI) Bidirectional; VCC = 5 V 2.49 2.5 2.51 V Bidirectional; VCC = 3.3 V 1.64 1.65 1.66 V VREF(UNI) Unidirectional; VCC = 5 V 0.49 0.5 0.51 V Unidirectional; VCC = 3.3 V 0.32 0.33 0.34 V Reference Source Current Limit IREF(SRC) Maximum current VREF can passively source – 25 – mA IREF(SNK) Maximum current VREF can passively sink – –25 – mA Reference Slew Rate SRREF CVREF = 0 nF, RVREF = 0 Ω 0.8 – – V/µs OVERCURRENT FAULT CHARACTERISTICS (OCF) OCF On Voltage [4] VFAULT-ON RPU = 4.7 kΩ, under fault condition – 0.07 0.4 V OCF Sink Current [4] IOCF(SNK) No Fault – 100 – nA Fault Assertion 0.01 – 1.1 mA VOC Operating Voltage Range VVOC VCC = 5 V 0.5 – 2 V VCC = 3.3 V 0.33 – 1.32 V Fault Error EOCF –10 ±3 10 %IOCF-OP OCF Hysteresis IOCF(HYS) VCC = 5 V – 6 – %FS VCC = 3.3 V – 9 – %FS OCF Reaction Time [4] tOCF-R Time from IOCF-OP, with a 1.2 × IOCF-OP until fault asserts – 1 1.5 μs OCF Mask [4] tOCF-MASK Time IOCF-OP must be present after tOCF-R for fault assertion [3] 0 0 3 µs OCF Response Time [4] tOCF tOCF-MASK = 0.5µs – 1 1.5 µs OCF Hold Time [4] tOCF-HOLD Minimum duration of FAULT assertion [3] 0 0 5 ms GAIN SELECTION PIN CHARACTERISTICS (GAIN_SEL0, GAIN_SEL1) Gain Select Internal Resistor RGSint – 1 – MΩ GAIN_SEL Logic Input Voltage VH(SEL) VCC = 5 V 3.75 – – V VCC = 3.3 V 2.25 – – V VL(SEL) – – 0.5 V Leakage Current [4] ISEL(SNK) – – ±10 µA [1] VCC rate +1 V/ms, for best accuracy. [2] Only enabled on 5V devices. [3] Typical value is factory default. [4] Guaranteed by design and bench validated

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com ACS37002LMABTR-050B5 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = – 40°C to 150°C, CBYPASS = 0.1 µF, and VCC = 5 V, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ. [1] Max. Units NOMINAL PERFORMANCE Current Sensing Range IPR Gain Sel 00 –50 – 50 A Gain Sel 01 –40 – 40 A Gain Sel 10 –33.3 – 33.3 A Gain Sel 11 –66.7 – 66.7 A Sensitivity Sens Gain Sel 00; IPR(min) < IP < IPR(max) – 40 – mV/A Gain Sel 01; IPR(min) < IP < IPR(max) – 50 – mV/A Gain Sel 10; IPR(min) < IP < IPR(max) – 60 – mV/A Gain Sel 11; IPR(min) < IP < IPR(max) – 30 – mV/A Overcurrent Fault Operating Range IOCF-OR Typ. = factory-programmed default, FS = Full-Scale 50 100 200 %FS Zero Current Output Voltage VIOUT(Q) Bidirectional; IP = 0 A, TA = 25°C – 2.5 – V TOTAL ERROR (V IOUT(ACTUAL) – (Sens(IDEAL) × IPR + VREF)) / (Sens(IDEAL) × IPR) × 100 AND TOTAL ERROR COMPONENTS Total Error ETOT IP = IPR(max) –1.75 –0.5 ±0.6 1.75 % Sensitivity Error ESENS IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C –1.5 –0.5 ±0.6 1.5 % Zero Current Reference Error VRE VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C –10 –2 ±3 10 mV VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C –10 –1 ±3 10 mV Offset Error VOE VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C –8 –1 ±4 8 mV VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C –8 –1 ±3 8 mV QVO Error VQE VIOUT(Q), IP = 0 A, TA = 25°C to 150°C –10 –3 ±5 10 mV VIOUT(Q), IP = 0 A, TA = –40°C to 25°C –10 –1 ±4 10 mV TOTAL ERROR AND TOTAL ERROR COMPONENTS INCLUDING LIFETIME DRIFT [2,3] Total Error Including Lifetime Drift ETOT_LTD IP = IPR(max) –3.6 –1.6 ±1.2 3.6 % Sensitivity Error Including Lifetime Drift ESENS_LTD IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C –3.4 –1.5 ±1.1 3.4 % Zero Current Reference Error Including Lifetime Drift VRE_LTD VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C –10 –3 ±4 10 mV VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C –10 –2 ±3 10 mV Offset Error Including Lifetime Drift VOE_LTD VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C –10 –2 ±5 10 mV VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C –10 ±4 10 mV QVO Error Including Lifetime Drift VQE_LTD VIOUT(Q), IP = 0 A, TA = 25°C to 150°C –14 –4 ±6 14 mV VIOUT(Q), IP = 0 A, TA = –40°C to 25°C –10 ±7 10 mV [1] Typicals values are the mean ±3 sigma of production distributions. These are formatted as mean ±3 sigma. [2] Typicals values are the mean ±3 sigma statistical combination of production and AEC-Q100 individual drift distributions. These are formatted as mean ±3 sigma. [3] Lifetime drift characteristics are based on a statistical combination of production distributions and worst case distribution of parametric drift of individuals observed during AEC-Q100 qualification. Contact Allegro MicroSystems for further information. ACS37002LMABTR-050B5 Gain_Sel Pin Performance Key Selection Identifier Parameter (Units) Gain_Sel_1 (Boolean) Gain_Sel_0 (Boolean) Sens (mV/A) Max IP (A) Type Digital Input Digital Input Calculation Bidirectional Selection Combination 0 0 40 50 0 1 50 40 1 0 60 33.3 1 1 30 66.7 ACS37002LMABTR-050B5

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com ACS37002LMABTR-066B5 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = – 40°C to 150°C, CBYPASS = 0.1 µF, and VCC = 5 V, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ. [1] Max. Units NOMINAL PERFORMANCE Current Sensing Range IPR Gain Sel 00 –66.7 – 66.7 A Gain Sel 01 –80 – 80 A Gain Sel 10 –100 – 100 A Gain Sel 11 –133.3 – 133.3 A Sensitivity Sens Gain Sel 00; IPR(min) < IP < IPR(max) – 30 – mV/A Gain Sel 01; IPR(min) < IP < IPR(max) – 25 – mV/A Gain Sel 10; IPR(min) < IP < IPR(max) – 20 – mV/A Gain Sel 11; IPR(min) < IP < IPR(max) – 15 – mV/A Overcurrent Fault Operating Range IOCF-OR Typ. = factory-programmed default, FS = Full-Scale 50 100 200 %FS Zero Current Output Voltage VIOUT(Q) Bidirectional; IP = 0 A, TA = 25°C – 2.5 – V TOTAL ERROR (V IOUT(ACTUAL) – (Sens(IDEAL) × IPR + VREF)) / (Sens(IDEAL) × IPR) × 100 AND TOTAL ERROR COMPONENTS Total Error ETOT IP = IPR(max) –1.75 –0.5 ±0.6 1.75 % Sensitivity Error ESENS IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C –1.5 –0.5 ±0.6 1.5 % Zero Current Reference Error VRE VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C –10 –2 ±3 10 mV VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C –10 –1 ±3 10 mV Offset Error VOE VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C –8 –1 ±4 8 mV VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C –8 –1 ±3 8 mV QVO Error VQE VIOUT(Q), IP = 0 A, TA = 25°C to 150°C –10 –3 ±5 10 mV VIOUT(Q), IP = 0 A, TA = –40°C to 25°C –10 –1 ±4 10 mV TOTAL ERROR AND TOTAL ERROR COMPONENTS INCLUDING LIFETIME DRIFT [2,3] Total Error Including Lifetime Drift ETOT_LTD IP = IPR(max) –3.6 –1.6 ±1.2 3.6 % Sensitivity Error Including Lifetime Drift ESENS_LTD IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C –3.4 –1.5 ±1.1 3.4 % Zero Current Reference Error Including Lifetime Drift VRE_LTD VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C –10 –3 ±4 10 mV VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C –10 –2 ±3 10 mV Offset Error Including Lifetime Drift VOE_LTD VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C –10 –2 ±5 10 mV VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C –10 ±4 10 mV QVO Error Including Lifetime Drift VQE_LTD VIOUT(Q), IP = 0 A, TA = 25°C to 150°C –14 –4 ±6 14 mV VIOUT(Q), IP = 0 A, TA = –40°C to 25°C –10 ±7 10 mV [1] Typicals values are the mean ±3 sigma of production distributions. These are formatted as mean ±3 sigma. [2] Typicals values are the mean ±3 sigma statistical combination of production and AEC-Q100 individual drift distributions. These are formatted as mean ±3 sigma. [3] Lifetime drift characteristics are based on a statistical combination of production distributions and worst case distribution of parametric drift of individuals observed during AEC-Q100 qualification. Contact Allegro MicroSystems for further information. ACS37002LMABTR-066B5 Gain_Sel Pin Performance Key Selection Identifier Parameter (Units) Gain_Sel_1 (Boolean) Gain_Sel_0 (Boolean) Sens (mV/A) Max IP (A) Type Digital Input Digital Input Calculation Bidirectional Selection Combination 0 0 30 66.7 0 1 25 80 1 0 20 100 1 1 15 133.3 ACS37002LMABTR-066B5

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com ACS37002LMABTR-050U5 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = – 40°C to 150°C, CBYPASS = 0.1 µF, and VCC = 5 V, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ. [1] Max. Units NOMINAL PERFORMANCE Current Sensing Range IPR Gain Sel 00 0 – 50 A Gain Sel 01 0 – 40 A Gain Sel 10 0 – 33.3 A Gain Sel 11 0 – 66.7 A Sensitivity Sens Gain Sel 00; IPR(min) < IP < IPR(max) – 80 – mV/A Gain Sel 01; IPR(min) < IP < IPR(max) – 100 – mV/A Gain Sel 10; IPR(min) < IP < IPR(max) – 120 – mV/A Gain Sel 11; IPR(min) < IP < IPR(max) – 60 – mV/A Overcurrent Fault Operating Range IOCF-OR Typ. = factory-programmed default, FS = Full-Scale 25 50 100 %FS Zero Current Output Voltage VIOUT(Q) Unidirectional; IP = 0 A, TA = 25°C – 0.5 – V TOTAL ERROR (V IOUT(ACTUAL) – (Sens(IDEAL) × IPR + VREF)) / (Sens(IDEAL) × IPR) × 100 AND TOTAL ERROR COMPONENTS Total Error ETOT IP = IPR(max) –1.75 –0.5 ±0.6 1.75 % Sensitivity Error ESENS IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C –1.5 –0.5 ±0.6 1.5 % Zero Current Reference Error VRE VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C –10 –2 ±3 10 mV VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C –10 –1 ±3 10 mV Offset Error VOE VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C –8 –1 ±4 8 mV VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C –8 –1 ±3 8 mV QVO Error VQE VIOUT(Q), IP = 0 A, TA = 25°C to 150°C –10 –3 ±5 10 mV VIOUT(Q), IP = 0 A, TA = –40°C to 25°C –10 –1 ±4 10 mV TOTAL ERROR AND TOTAL ERROR COMPONENTS INCLUDING LIFETIME DRIFT [2,3] Total Error Including Lifetime Drift ETOT_LTD IP = IPR(max) –3.6 –1.6 ±1.2 3.6 % Sensitivity Error Including Lifetime Drift ESENS_LTD IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C –3.4 –1.5 ±1.1 3.4 % Zero Current Reference Error Including Lifetime Drift VRE_LTD VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C –10 –3 ±4 10 mV VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C –10 –2 ±3 10 mV Offset Error Including Lifetime Drift VOE_LTD VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C –10 –2 ±5 10 mV VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C –10 ±4 10 mV QVO Error Including Lifetime Drift VQE_LTD VIOUT(Q), IP = 0 A, TA = 25°C to 150°C –14 –4 ±6 14 mV VIOUT(Q), IP = 0 A, TA = –40°C to 25°C –10 ±7 10 mV [1] Typicals values are the mean ±3 sigma of production distributions. These are formatted as mean ±3 sigma. [2] Typicals values are the mean ±3 sigma statistical combination of production and AEC-Q100 individual drift distributions. These are formatted as mean ±3 sigma. [3] Lifetime drift characteristics are based on a statistical combination of production distributions and worst case distribution of parametric drift of individuals observed during AEC-Q100 qualification. Contact Allegro MicroSystems for further information. ACS37002LMABTR-050U5 Gain_Sel Pin Performance Key Selection Identifier Parameter (Units) Gain_Sel_1 (Boolean) Gain_Sel_0 (Boolean) Sens (mV/A) Max IP (A) Type Digital Input Digital Input Calculation Bidirectional Selection Combination 0 0 80 50 0 1 100 40 1 0 120 33.3 1 1 60 66.7 ACS37002LMABTR-050U5

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com ACS37002LMABTR-066U5 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = – 40°C to 150°C, CBYPASS = 0.1 µF, and VCC = 5 V, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ. [1] Max. Units NOMINAL PERFORMANCE Current Sensing Range IPR Gain Sel 00 0 – 66.7 A Gain Sel 01 0 – 80 A Gain Sel 10 0 – 100 A Gain Sel 11 0 – 133.3 A Sensitivity Sens Gain Sel 00; IPR(min) < IP < IPR(max) – 60 – mV/A Gain Sel 01; IPR(min) < IP < IPR(max) – 50 – mV/A Gain Sel 10; IPR(min) < IP < IPR(max) – 40 – mV/A Gain Sel 11; IPR(min) < IP < IPR(max) – 30 – mV/A Overcurrent Fault Operating Range IOCF-OR Typ. = factory-programmed default, FS = Full-Scale 25 50 100 %FS Zero Current Output Voltage VIOUT(Q) Unidirectional; IP = 0 A, TA = 25°C – 0.5 – V TOTAL ERROR (V IOUT(ACTUAL) – (Sens(IDEAL) × IPR + VREF)) / (Sens(IDEAL) × IPR) × 100 AND TOTAL ERROR COMPONENTS Total Error ETOT IP = IPR(max) –1.75 –0.5 ±0.6 1.75 % Sensitivity Error ESENS IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C –1.5 –0.5 ±0.6 1.5 % Zero Current Reference Error VRE VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C –10 –2 ±3 10 mV VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C –10 –1 ±3 10 mV Offset Error VOE VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C –8 –1 ±4 8 mV VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C –8 –1 ±3 8 mV QVO Error VQE VIOUT(Q), IP = 0 A, TA = 25°C to 150°C –10 –3 ±5 10 mV VIOUT(Q), IP = 0 A, TA = –40°C to 25°C –10 –1 ±4 10 mV TOTAL ERROR AND TOTAL ERROR COMPONENTS INCLUDING LIFETIME DRIFT [2,3] Total Error Including Lifetime Drift ETOT_LTD IP = IPR(max) –3.6 –1.6 ±1.2 3.6 % Sensitivity Error Including Lifetime Drift ESENS_LTD IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C –3.4 –1.5 ±1.1 3.4 % Zero Current Reference Error Including Lifetime Drift VRE_LTD VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C –10 –3 ±4 10 mV VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C –10 –2 ±3 10 mV Offset Error Including Lifetime Drift VOE_LTD VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C –10 –2 ±5 10 mV VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C –10 ±4 10 mV QVO Error Including Lifetime Drift VQE_LTD VIOUT(Q), IP = 0 A, TA = 25°C to 150°C –14 –4 ±6 14 mV VIOUT(Q), IP = 0 A, TA = –40°C to 25°C –10 ±7 10 mV [1] Typicals values are the mean ±3 sigma of production distributions. These are formatted as mean ±3 sigma. [2] Typicals values are the mean ±3 sigma statistical combination of production and AEC-Q100 individual drift distributions. These are formatted as mean ±3 sigma. [3] Lifetime drift characteristics are based on a statistical combination of production distributions and worst case distribution of parametric drift of individuals observed during AEC-Q100 qualification. Contact Allegro MicroSystems for further information. ACS37002LMABTR-066U5 Gain_Sel Pin Performance Key Selection Identifier Parameter (Units) Gain_Sel_1 (Boolean) Gain_Sel_0 (Boolean) Sens (mV/A) Max IP (A) Type Digital Input Digital Input Calculation Bidirectional Selection Combination 0 0 60 66.7 0 1 50 80 1 0 40 100 1 1 30 133.3 ACS37002LMABTR-066U5

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com ACS37002LMABTR-050B3 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = – 40°C to 150°C, CBYPASS = 0.1 µF, and VCC = 3.3 V, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ. [1] Max. Units NOMINAL PERFORMANCE Current Sensing Range IPR Gain Sel 00 –50 – 50 A Gain Sel 01 –40 – 40 A Gain Sel 10 –33.3 – 33.3 A Gain Sel 11 –66.7 – 66.7 A Sensitivity Sens Gain Sel 00; IPR(min) < IP < IPR(max) – 26.4 – mV/A Gain Sel 01; IPR(min) < IP < IPR(max) – 33 – mV/A Gain Sel 10; IPR(min) < IP < IPR(max) – 39.6 – mV/A Gain Sel 11; IPR(min) < IP < IPR(max) – 19.8 – mV/A Overcurrent Fault Operating Range IOCF-OR Typ. = factory-programmed default, FS = Full-Scale 50 100 200 %FS Zero Current Output Voltage VIOUT(Q) Bidirectional; IP = 0 A, TA = 25°C – 1.65 – V TOTAL ERROR (V IOUT(ACTUAL) – (Sens(IDEAL) × IPR + VREF)) / (Sens(IDEAL) × IPR) × 100 AND TOTAL ERROR COMPONENTS Total Error ETOT IP = IPR(max) –1.75 –0.5 ±0.6 1.75 % Sensitivity Error ESENS IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C –1.5 –0.5 ±0.6 1.5 % Zero Current Reference Error VRE VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C –10 –2 ±3 10 mV VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C –10 –1 ±3 10 mV Offset Error VOE VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C –8 –1 ±4 8 mV VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C –8 –1 ±3 8 mV QVO Error VQE VIOUT(Q), IP = 0 A, TA = 25°C to 150°C –10 –3 ±5 10 mV VIOUT(Q), IP = 0 A, TA = –40°C to 25°C –10 –1 ±4 10 mV TOTAL ERROR AND TOTAL ERROR COMPONENTS INCLUDING LIFETIME DRIFT [2,3] Total Error Including Lifetime Drift ETOT_LTD IP = IPR(max) –3.6 –1.6 ±1.2 3.6 % Sensitivity Error Including Lifetime Drift ESENS_LTD IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C –3.4 –1.5 ±1.1 3.4 % Zero Current Reference Error Including Lifetime Drift VRE_LTD VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C –10 –3 ±4 10 mV VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C –10 –2 ±3 10 mV Offset Error Including Lifetime Drift VOE_LTD VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C –10 –2 ±5 10 mV VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C –10 ±4 10 mV QVO Error Including Lifetime Drift VQE_LTD VIOUT(Q), IP = 0 A, TA = 25°C to 150°C –14 –4 ±6 14 mV VIOUT(Q), IP = 0 A, TA = –40°C to 25°C –10 ±7 10 mV [1] Typicals values are the mean ±3 sigma of production distributions. These are formatted as mean ±3 sigma. [2] Typicals values are the mean ±3 sigma statistical combination of production and AEC-Q100 individual drift distributions. These are formatted as mean ±3 sigma. [3] Lifetime drift characteristics are based on a statistical combination of production distributions and worst case distribution of parametric drift of individuals observed during AEC-Q100 qualification. Contact Allegro MicroSystems for further information. ACS37002LMABTR-050B3 Gain_Sel Pin Performance Key Selection Identifier Parameter (Units) Gain_Sel_1 (Boolean) Gain_Sel_0 (Boolean) Sens (mV/A) Max IP (A) Type Digital Input Digital Input Calculation Bidirectional Selection Combination 0 0 26.4 50 0 1 33 40 1 0 39.6 33.3 1 1 19.8 66.7 ACS37002LMABTR-050B3

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com ACS37002LMABTR-066B3 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = – 40°C to 150°C, CBYPASS = 0.1 µF, and VCC = 3.3 V, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ. [1] Max. Units NOMINAL PERFORMANCE Current Sensing Range IPR Gain Sel 00 –66.7 – 66.7 A Gain Sel 01 –80 – 80 A Gain Sel 10 –100 – 100 A Gain Sel 11 –133.3 – 133.3 A Sensitivity Sens Gain Sel 00; IPR(min) < IP < IPR(max) – 19.8 – mV/A Gain Sel 01; IPR(min) < IP < IPR(max) – 16.5 – mV/A Gain Sel 10; IPR(min) < IP < IPR(max) – 13.2 – mV/A Gain Sel 11; IPR(min) < IP < IPR(max) – 9.9 – mV/A Overcurrent Fault Operating Range IOCF-OR Typ. = factory-programmed default, FS = Full-Scale 50 100 200 %FS Zero Current Output Voltage VIOUT(Q) Bidirectional; IP = 0 A, TA = 25°C – 1.65 – V TOTAL ERROR (V IOUT(ACTUAL) – (Sens(IDEAL) × IPR + VREF)) / (Sens(IDEAL) × IPR) × 100 AND TOTAL ERROR COMPONENTS Total Error ETOT IP = IPR(max) –1.75 –0.5 ±0.6 1.75 % Sensitivity Error ESENS IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C –1.5 –0.5 ±0.6 1.5 % Zero Current Reference Error VRE VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C –10 –2 ±3 10 mV VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C –10 –1 ±3 10 mV Offset Error VOE VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C –8 –1 ±4 8 mV VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C –8 –1 ±3 8 mV QVO Error VQE VIOUT(Q), IP = 0 A, TA = 25°C to 150°C –10 –3 ±5 10 mV VIOUT(Q), IP = 0 A, TA = –40°C to 25°C –10 –1 ±4 10 mV TOTAL ERROR AND TOTAL ERROR COMPONENTS INCLUDING LIFETIME DRIFT [2,3] Total Error Including Lifetime Drift ETOT_LTD IP = IPR(max) –3.6 –1.6 ±1.2 3.6 % Sensitivity Error Including Lifetime Drift ESENS_LTD IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C –3.4 –1.5 ±1.1 3.4 % Zero Current Reference Error Including Lifetime Drift VRE_LTD VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C –10 –3 ±4 10 mV VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C –10 –2 ±3 10 mV Offset Error Including Lifetime Drift VOE_LTD VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C –10 –2 ±5 10 mV VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C –10 ±4 10 mV QVO Error Including Lifetime Drift VQE_LTD VIOUT(Q), IP = 0 A, TA = 25°C to 150°C –14 –4 ±6 14 mV VIOUT(Q), IP = 0 A, TA = –40°C to 25°C –10 ±7 10 mV [1] Typicals values are the mean ±3 sigma of production distributions. These are formatted as mean ±3 sigma. [2] Typicals values are the mean ±3 sigma statistical combination of production and AEC-Q100 individual drift distributions. These are formatted as mean ±3 sigma. [3] Lifetime drift characteristics are based on a statistical combination of production distributions and worst case distribution of parametric drift of individuals observed during AEC-Q100 qualification. Contact Allegro MicroSystems for further information. ACS37002LMABTR-066B3 Gain_Sel Pin Performance Key Selection Identifier Parameter (Units) Gain_Sel_1 (Boolean) Gain_Sel_0 (Boolean) Sens (mV/A) Max IP (A) Type Digital Input Digital Input Calculation Bidirectional Selection Combination 0 0 19.8 66.7 0 1 16.5 80 1 0 13.2 100 1 1 9.9 133.3 ACS37002LMABTR-066B3

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com ACS37002LMABTR-050U3 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = – 40°C to 150°C, CBYPASS = 0.1 µF, and VCC = 3.3 V, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ. [1] Max. Units NOMINAL PERFORMANCE Current Sensing Range IPR Gain Sel 00 0 – 50 A Gain Sel 01 0 – 40 A Gain Sel 10 0 – 33.3 A Gain Sel 11 0 – 66.7 A Sensitivity Sens Gain Sel 00; IPR(min) < IP < IPR(max) – 52.8 – mV/A Gain Sel 01; IPR(min) < IP < IPR(max) – 66 – mV/A Gain Sel 10; IPR(min) < IP < IPR(max) – 79.2 – mV/A Gain Sel 11; IPR(min) < IP < IPR(max) – 39.6 – mV/A Overcurrent Fault Operating Range IOCF-OR Typ. = factory-programmed default, FS = Full-Scale 25 50 100 %FS Zero Current Output Voltage VIOUT(Q) Unidirectional; IP = 0 A, TA = 25°C – 0.33 – V TOTAL ERROR (V IOUT(ACTUAL) – (Sens(IDEAL) × IPR + VREF)) / (Sens(IDEAL) × IPR) × 100 AND TOTAL ERROR COMPONENTS Total Error ETOT IP = IPR(max) –1.75 –0.5 ±0.6 1.75 % Sensitivity Error ESENS IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C –1.5 –0.5 ±0.6 1.5 % Zero Current Reference Error VRE VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C –10 –2 ±3 10 mV VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C –10 –1 ±3 10 mV Offset Error VOE VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C –8 –1 ±4 8 mV VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C –8 –1 ±3 8 mV QVO Error VQE VIOUT(Q), IP = 0 A, TA = 25°C to 150°C –10 –3 ±5 10 mV VIOUT(Q), IP = 0 A, TA = –40°C to 25°C –10 –1 ±4 10 mV TOTAL ERROR AND TOTAL ERROR COMPONENTS INCLUDING LIFETIME DRIFT [2,3] Total Error Including Lifetime Drift ETOT_LTD IP = IPR(max) –3.6 –1.6 ±1.2 3.6 % Sensitivity Error Including Lifetime Drift ESENS_LTD IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C –3.4 –1.5 ±1.1 3.4 % Zero Current Reference Error Including Lifetime Drift VRE_LTD VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C –10 –3 ±4 10 mV VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C –10 –2 ±3 10 mV Offset Error Including Lifetime Drift VOE_LTD VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C –10 –2 ±5 10 mV VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C –10 ±4 10 mV QVO Error Including Lifetime Drift VQE_LTD VIOUT(Q), IP = 0 A, TA = 25°C to 150°C –14 –4 ±6 14 mV VIOUT(Q), IP = 0 A, TA = –40°C to 25°C –10 ±7 10 mV [1] Typicals values are the mean ±3 sigma of production distributions. These are formatted as mean ±3 sigma. [2] Typicals values are the mean ±3 sigma statistical combination of production and AEC-Q100 individual drift distributions. These are formatted as mean ±3 sigma. [3] Lifetime drift characteristics are based on a statistical combination of production distributions and worst case distribution of parametric drift of individuals observed during AEC-Q100 qualification. Contact Allegro MicroSystems for further information. ACS37002LMABTR-050U3 Gain_Sel Pin Performance Key Selection Identifier Parameter (Units) Gain_Sel_1 (Boolean) Gain_Sel_0 (Boolean) Sens (mV/A) Max IP (A) Type Digital Input Digital Input Calculation Bidirectional Selection Combination 0 0 52.8 50 0 1 66 40 1 0 79.2 33.3 1 1 39.6 66.7 ACS37002LMABTR-050U3

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com ACS37002LMABTR-066U3 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = – 40°C to 150°C, CBYPASS = 0.1 µF, and VCC = 3.3 V, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ. [1] Max. Units NOMINAL PERFORMANCE Current Sensing Range IPR Gain Sel 00 0 – 66.7 A Gain Sel 01 0 – 80 A Gain Sel 10 0 – 100 A Gain Sel 11 0 – 133.3 A Sensitivity Sens Gain Sel 00; IPR(min) < IP < IPR(max) – 39.6 – mV/A Gain Sel 01; IPR(min) < IP < IPR(max) – 33 – mV/A Gain Sel 10; IPR(min) < IP < IPR(max) – 26.4 – mV/A Gain Sel 11; IPR(min) < IP < IPR(max) – 19.8 – mV/A Overcurrent Fault Operating Range IOCF-OR Typ. = factory-programmed default, FS = Full-Scale 25 50 100 %FS Zero Current Output Voltage VIOUT(Q) Unidirectional; IP = 0 A, TA = 25°C – 0.33 – V TOTAL ERROR (V IOUT(ACTUAL) – (Sens(IDEAL) × IPR + VREF)) / (Sens(IDEAL) × IPR) × 100 AND TOTAL ERROR COMPONENTS Total Error ETOT IP = IPR(max) –1.75 –0.5 ±0.6 1.75 % Sensitivity Error ESENS IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C –1.5 –0.5 ±0.6 1.5 % Zero Current Reference Error VRE VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C –10 –2 ±3 10 mV VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C –10 –1 ±3 10 mV Offset Error VOE VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C –8 –1 ±4 8 mV VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C –8 –1 ±3 8 mV QVO Error VQE VIOUT(Q), IP = 0 A, TA = 25°C to 150°C –10 –3 ±5 10 mV VIOUT(Q), IP = 0 A, TA = –40°C to 25°C –10 –1 ±4 10 mV TOTAL ERROR AND TOTAL ERROR COMPONENTS INCLUDING LIFETIME DRIFT [2,3] Total Error Including Lifetime Drift ETOT_LTD IP = IPR(max) –3.6 –1.6 ±1.2 3.6 % Sensitivity Error Including Lifetime Drift ESENS_LTD IP = IPR(max), TA = 25°C to 150°C or –40°C to 25°C –3.4 –1.5 ±1.1 3.4 % Zero Current Reference Error Including Lifetime Drift VRE_LTD VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C –10 –3 ±4 10 mV VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C –10 –2 ±3 10 mV Offset Error Including Lifetime Drift VOE_LTD VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C –10 –2 ±5 10 mV VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C –10 ±4 10 mV QVO Error Including Lifetime Drift VQE_LTD VIOUT(Q), IP = 0 A, TA = 25°C to 150°C –14 –4 ±6 14 mV VIOUT(Q), IP = 0 A, TA = –40°C to 25°C –10 ±7 10 mV [1] Typicals values are the mean ±3 sigma of production distributions. These are formatted as mean ±3 sigma. [2] Typicals values are the mean ±3 sigma statistical combination of production and AEC-Q100 individual drift distributions. These are formatted as mean ±3 sigma. [3] Lifetime drift characteristics are based on a statistical combination of production distributions and worst case distribution of parametric drift of individuals observed during AEC-Q100 qualification. Contact Allegro MicroSystems for further information. ACS37002LMABTR-066U3 Gain_Sel Pin Performance Key Selection Identifier Parameter (Units) Gain_Sel_1 (Boolean) Gain_Sel_0 (Boolean) Sens (mV/A) Max IP (A) Type Digital Input Digital Input Calculation Bidirectional Selection Combination 0 0 39.6 66.7 0 1 33 80 1 0 26.4 100 1 1 19.8 133.3 ACS37002LMABTR-066U3

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com ACS37002KMABTR-050B5 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = – 40°C to 125°C, CBYPASS = 0.1 µF, and VCC = 5 V, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ. [1] Max. Units NOMINAL PERFORMANCE Current Sensing Range IPR Gain Sel 00 –50 – 50 A Gain Sel 01 –40 – 40 A Gain Sel 10 –33.3 – 33.3 A Gain Sel 11 –66.7 – 66.7 A Sensitivity Sens Gain Sel 00; IPR(min) < IP < IPR(max) – 40 – mV/A Gain Sel 01; IPR(min) < IP < IPR(max) – 50 – mV/A Gain Sel 10; IPR(min) < IP < IPR(max) – 60 – mV/A Gain Sel 11; IPR(min) < IP < IPR(max) – 30 – mV/A Overcurrent Fault Operating Range IOCF-OR Typ. = factory-programmed default, FS = Full-Scale 50 100 200 %FS Zero Current Output Voltage VIOUT(Q) Bidirectional; IP = 0 A, TA = 25°C – 2.5 – V TOTAL ERROR (V IOUT(ACTUAL) – (Sens(IDEAL) × IPR+VREF)) / (Sens(IDEAL) × IPR)× 100 AND TOTAL ERROR COMPONENTS Total Error ETOT IP = IPR(max) –1.75 –0.5 ±0.6 1.75 % Sensitivity Error ESENS IP = IPR(max), TA = 25°C to 125°C, TA = –40°C to 25°C –1 –0.3 ±0.5 1 % Zero Current Reference Error VRE VREFactual – VREFideal, IP = 0 A, TA = 25°C to 125°C –10 –2 ±3 10 mV VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C –10 –1 ±3 10 mV Offset Error VOE VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 125°C –8 ±5 8 mV VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C –8 –1 ±3 8 mV QVO Error VQE VIOUT(Q), IP = 0 A, TA = 25°C to 125°C –10 –3 ±4 10 mV VIOUT(Q), IP = 0 A, TA = –40°C to 25°C –10 ±5 10 mV TOTAL ERROR AND TOTAL ERROR COMPONENTS INCLUDING LIFETIME DRIFT [2,3] Total Error Including Lifetime Drift ETOT_LTD IP = IPR(max) –3.4 –1.4 ±1.2 3.4 % Sensitivity Error Including Lifetime Drift ESENS_LTD IP = IPR(max), TA = 25°C to 125°C or –40°C to 25°C –3.2 –1.3 ±1.1 3.2 % Zero Current Reference Error Including Lifetime Drift VRE_LTD VREFactual – VREFideal, IP = 0 A, TA = 25°C to 125°C –10 –3 ±4 10 mV VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C –10 –2 ±3 10 mV Offset Error Including Lifetime Drift VOE_LTD VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 125°C –10 –2 ±5 10 mV VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C –10 ±4 10 mV QVO Error Including Lifetime Drift VQE_LTD VIOUT(Q), IP = 0 A, TA = 25°C to 125°C –14 –4 ±6 14 mV VIOUT(Q), IP = 0 A, TA = –40°C to 25°C –10 ±7 10 mV [1] Typicals values are the mean ±3 sigma of production distributions. These are formatted as mean ±3 sigma. [2] Typicals values are the mean ±3 sigma statistical combination of production and AEC-Q100 individual drift distributions. These are formatted as mean ±3 sigma. [3] Lifetime drift characteristics are based on a statistical combination of production distributions and worst case distribution of parametric drift of individuals observed during AEC-Q100 qualification. Contact Allegro MicroSystems for further information. AACS37002KMABTR-050B5 Gain_Sel Pin Performance Key Selection Identifier Parameter (Units) Gain_Sel_1 (Boolean) Gain_Sel_0 (Boolean) Sens (mV/A) Max IP (A) Type Digital Input Digital Input Calculation Bidirectional Selection Combination 0 0 40 50 0 1 50 40 1 0 60 33.3 1 1 30 66.7 ACS37002KMABTR-050B5

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com ACS37002KMABTR-050B3 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = – 40°C to 125°C, CBYPASS = 0.1 µF, and VCC = 3.3 V, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ. [1] Max. Units NOMINAL PERFORMANCE Current Sensing Range IPR Gain Sel 00 –50 – 50 A Gain Sel 01 –40 – 40 A Gain Sel 10 –33.3 – 33.3 A Gain Sel 11 –66.7 – 66.7 A Sensitivity Sens Gain Sel 00; IPR(min) < IP < IPR(max) – 26.4 – mV/A Gain Sel 01; IPR(min) < IP < IPR(max) – 33 – mV/A Gain Sel 10; IPR(min) < IP < IPR(max) – 39.6 – mV/A Gain Sel 11; IPR(min) < IP < IPR(max) – 19.8 – mV/A Overcurrent Fault Operating Range IOCF-OR Typ. = factory-programmed default, FS = Full-Scale 50 100 200 %FS Zero Current Output Voltage VIOUT(Q) Bidirectional; IP = 0 A, TA = 25°C – 1.65 – V TOTAL ERROR (V IOUT(ACTUAL) – (Sens(IDEAL) × IPR + VREF)) / (Sens(IDEAL) × IPR) × 100 AND TOTAL ERROR COMPONENTS Total Error ETOT IP = IPR(max) –1.75 –0.5 ±0.6 1.75 % Sensitivity Error ESENS IP = IPR(max), TA = 25°C to 125°C, TA = –40°C to 25°C –1 –0.3 ±0.5 1 % Zero Current Reference Error VRE VREFactual – VREFideal, IP = 0 A, TA = 25°C to 125°C –10 –2 ±3 10 mV VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C –10 –1 ±3 10 mV Offset Error VOE VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 125°C –8 ±5 8 mV VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C –8 –1 ±3 8 mV QVO Error VQE VIOUT(Q), IP = 0 A, TA = 25°C to 125°C –10 –3 ±4 10 mV VIOUT(Q), IP = 0 A, TA = –40°C to 25°C –10 ±5 10 mV TOTAL ERROR AND TOTAL ERROR COMPONENTS INCLUDING LIFETIME DRIFT [2,3] Total Error Including Lifetime Drift ETOT_LTD IP = IPR(max) –3.4 –1.4 ±1.2 3.4 % Sensitivity Error Including Lifetime Drift ESENS_LTD IP = IPR(max), TA = 25°C to 125°C or –40°C to 25°C –3.2 –1.3 ±1.1 3.2 % Zero Current Reference Error Including Lifetime Drift VRE_LTD VREFactual – VREFideal, IP = 0 A, TA = 25°C to 125°C –10 –3 ±4 10 mV VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C –10 –2 ±3 10 mV Offset Error Including Lifetime Drift VOE_LTD VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 125°C –10 –2 ±5 10 mV VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C –10 ±4 10 mV QVO Error Including Lifetime Drift VQE_LTD VIOUT(Q), IP = 0 A, TA = 25°C to 125°C –14 –4 ±6 14 mV VIOUT(Q), IP = 0 A, TA = –40°C to 25°C –10 ±7 10 mV [[1] Typicals values are the mean ±3 sigma of production distributions. These are formatted as mean ±3 sigma. [2] Typicals values are the mean ±3 sigma statistical combination of production and AEC-Q100 individual drift distributions. These are formatted as mean ±3 sigma. [3] Lifetime drift characteristics are based on a statistical combination of production distributions and worst case distribution of parametric drift of individuals observed during AEC-Q100 qualification. Contact Allegro MicroSystems for further information. ACS37002KMABTR-050B3 Gain_Sel Pin Performance Key Selection Identifier Parameter (Units) Gain_Sel_1 (Boolean) Gain_Sel_0 (Boolean) Sens (mV/A) Max IP (A) Type Digital Input Digital Input Calculation Bidirectional Selection Combination 0 0 26.4 50 0 1 33 40 1 0 39.6 33.3 1 1 19.8 66.7 ACS37002KMABTR-050B3

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com ACS37002LLAATR-015B5 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = – 40°C to 150°C, CBYPASS = 0.1 µF, and VCC = 5 V, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ. [1] Max. Units NOMINAL PERFORMANCE Current Sensing Range IPR Gain Sel 00 –15 – 15 A Gain Sel 01 –12 – 12 A Gain Sel 10 –10 – 10 A Gain Sel 11 –20 – 20 A Sensitivity Sens Gain Sel 00; IPR(min) < IP < IPR(max) – 133.3 – mV/A Gain Sel 01; IPR(min) < IP < IPR(max) – 166.6 – mV/A Gain Sel 10; IPR(min) < IP < IPR(max) – 200 – mV/A Gain Sel 11; IPR(min) < IP < IPR(max) – 100 – mV/A Overcurrent Fault Operating Range IOCF-OR Typ. = factory-programmed default, FS = Full-Scale 50 100 200 %FS Zero Current Output Voltage VIOUT(Q) Bidirectional; IP = 0 A, TA = 25°C – 2.5 – V TOTAL ERROR (V IOUT(ACTUAL) – (Sens(IDEAL) × IPR + VREF)) / (Sens(IDEAL) × IPR) × 100 AND TOTAL ERROR COMPONENTS Total Error ETOT IP = IPR(max) –1.75 ±1.4 1.75 % Sensitivity Error ESENS IP = IPR(max), TA = 25°C to 150°C –1.5 ±1.3 1.5 % IP = IPR(max), TA = –40°C to 25°C –1.5 ±1.2 1.5 % Zero Current Reference Error VRE VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C –10 ±4 10 mV VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C –10 ±5 10 mV Offset Error VOE VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C –8 ±4 8 mV VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C –8 ±5 8 mV QVO Error VQE VIOUT(Q), IP = 0 A, TA = 25°C to 150°C –10 ±6 10 mV VIOUT(Q), IP = 0 A, TA = –40°C to 25°C –10 ±7 10 mV [1] Typicals are based on worse case mean ±3 sigma values during production or production and qualification. ACS37002LLAATR-015B5 Gain_Sel Pin Performance Key Selection Identifier Parameter (Units) Gain_Sel_1 (Boolean) Gain_Sel_0 (Boolean) Sens (mV/A) Max IP (A) Type Digital Input Digital Input Calculation Bidirectional Selection Combination 0 0 133.3 15 0 1 166.6 12 1 0 200 10 1 1 100 20 ACS37002LLAATR-015B5

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com ACS37002LLAATR-025B5 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = – 40°C to 150°C, CBYPASS = 0.1 µF, and VCC = 5 V, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ. [1] Max. Units NOMINAL PERFORMANCE Current Sensing Range IPR Gain Sel 00 –25 – 25 A Gain Sel 01 –30 – 30 A Gain Sel 10 –37.5 – 37.5 A Gain Sel 11 –50 – 50 A Sensitivity Sens Gain Sel 00; IPR(min) < IP < IPR(max) – 80 – mV/A Gain Sel 01; IPR(min) < IP < IPR(max) – 66.6 – mV/A Gain Sel 10; IPR(min) < IP < IPR(max) – 53.3 – mV/A Gain Sel 11; IPR(min) < IP < IPR(max) – 40 – mV/A Overcurrent Fault Operating Range IOCF-OR Typ. = factory-programmed default, FS = Full-Scale 50 100 200 %FS Zero Current Output Voltage VIOUT(Q) Bidirectional; IP = 0 A, TA = 25°C – 2.5 – V TOTAL ERROR (V IOUT(ACTUAL) – (Sens(IDEAL) × IPR + VREF)) / (Sens(IDEAL) × IPR) × 100 AND TOTAL ERROR COMPONENTS Total Error ETOT IP = IPR(max) –1.75 ±1.4 1.75 % Sensitivity Error ESENS IP = IPR(max), TA = 25°C to 150°C –1.5 ±1.3 1.5 % IP = IPR(max), TA = –40°C to 25°C –1.5 ±1.2 1.5 % Zero Current Reference Error VRE VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C –10 ±4 10 mV VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C –10 ±5 10 mV Offset Error VOE VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C –8 ±4 8 mV VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C –8 ±5 8 mV QVO Error VQE VIOUT(Q), IP = 0 A, TA = 25°C to 150°C –10 ±6 10 mV VIOUT(Q), IP = 0 A, TA = –40°C to 25°C –10 ±7 10 mV [1] Typicals are based on worse case mean ±3 sigma values during production or production and qualification. ACS37002LLAATR-025B5 Gain_Sel Pin Performance Key Selection Identifier Parameter (Units) Gain_Sel_1 (Boolean) Gain_Sel_0 (Boolean) Sens (mV/A) Max IP (A) Type Digital Input Digital Input Calculation Bidirectional Selection Combination 0 0 80 25 0 1 66.6 30 1 0 53.3 37.5 1 1 40 50 ACS37002LLAATR-025B5

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com ACS37002LLAATR-015B3 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = – 40°C to 150°C, CBYPASS = 0.1 µF, and VCC = 3.3 V, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ. [1] Max. Units NOMINAL PERFORMANCE Current Sensing Range IPR Gain Sel 00 –15 – 15 A Gain Sel 01 –12 – 12 A Gain Sel 10 –10 – 10 A Gain Sel 11 –20 – 20 A Sensitivity Sens Gain Sel 00; IPR(min) < IP < IPR(max) – 88 – mV/A Gain Sel 01; IPR(min) < IP < IPR(max) – 110 – mV/A Gain Sel 10; IPR(min) < IP < IPR(max) – 132 – mV/A Gain Sel 11; IPR(min) < IP < IPR(max) – 66 – mV/A Overcurrent Fault Operating Range IOCF-OR Typ. = factory-programmed default, FS = Full-Scale 50 100 200 %FS Zero Current Output Voltage VIOUT(Q) Bidirectional; IP = 0 A, TA = 25°C – 2.5 – V TOTAL ERROR (V IOUT(ACTUAL) – (Sens(IDEAL) × IPR + VREF)) / (Sens(IDEAL) × IPR) × 100 AND TOTAL ERROR COMPONENTS Total Error ETOT IP = IPR(max) –1.75 ±1.4 1.75 % Sensitivity Error ESENS IP = IPR(max), TA = 25°C to 150°C –1.5 ±1.3 1.5 % IP = IPR(max), TA = –40°C to 25°C –1.5 ±1.2 1.5 % Zero Current Reference Error VRE VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C –10 ±4 10 mV VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C –10 ±5 10 mV Offset Error VOE VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C –8 ±4 8 mV VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C –8 ±5 8 mV QVO Error VQE VIOUT(Q), IP = 0 A, TA = 25°C to 150°C –10 ±6 10 mV VIOUT(Q), IP = 0 A, TA = –40°C to 25°C –10 ±7 10 mV [1] Typicals are based on worse case mean ±3 sigma values during production or production and qualification. ACS37002LLAATR-015B3 Gain_Sel Pin Performance Key Selection Identifier Parameter (Units) Gain_Sel_1 (Boolean) Gain_Sel_0 (Boolean) Sens (mV/A) Max IP (A) Type Digital Input Digital Input Calculation Bidirectional Selection Combination 0 0 88 15 0 1 110 12 1 0 132 10 1 1 66 20 ACS37002LLAATR-015B3

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com ACS37002LLAATR-025U3 PERFORMANCE CHARACTERISTICS: Valid through full operating temperature range, TA = – 40°C to 150°C, CBYPASS = 0.1 µF, and VCC = 3.3 V, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ. [1] Max. Units NOMINAL PERFORMANCE Current Sensing Range IPR Gain Sel 00 –25 – 25 A Gain Sel 01 –30 – 30 A Gain Sel 10 –30 – 30 A Gain Sel 11 –50 – 50 A Sensitivity Sens Gain Sel 00; IPR(min) < IP < IPR(max) – 105.6 – mV/A Gain Sel 01; IPR(min) < IP < IPR(max) – 88 – mV/A Gain Sel 10; IPR(min) < IP < IPR(max) – 70.4 – mV/A Gain Sel 11; IPR(min) < IP < IPR(max) – 52.8 – mV/A Overcurrent Fault Operating Range IOCF-OR Typ. = factory-programmed default, FS = Full-Scale 50 100 200 %FS Zero Current Output Voltage VIOUT(Q) Bidirectional; IP = 0 A, TA = 25°C – 2.5 – V TOTAL ERROR (V IOUT(ACTUAL) – (Sens(IDEAL) × IPR + VREF)) / (Sens(IDEAL) × IPR) × 100 AND TOTAL ERROR COMPONENTS Total Error ETOT IP = IPR(max) –1.75 ±1.4 1.75 % Sensitivity Error ESENS IP = IPR(max), TA = 25°C to 150°C –1.5 ±1.3 1.5 % IP = IPR(max), TA = –40°C to 25°C –1.5 ±1.2 1.5 % Zero Current Reference Error VRE VREFactual – VREFideal, IP = 0 A, TA = 25°C to 150°C –10 ±4 10 mV VREFactual – VREFideal, IP = 0 A, TA = –40°C to 25°C –10 ±5 10 mV Offset Error VOE VIOUT(Q) – VREF, IP = 0 A, TA = 25°C to 150°C –8 ±4 8 mV VIOUT(Q) – VREF, IP = 0 A, TA = –40°C to 25°C –8 ±5 8 mV QVO Error VQE VIOUT(Q), IP = 0 A, TA = 25°C to 150°C –10 ±6 10 mV VIOUT(Q), IP = 0 A, TA = –40°C to 25°C –10 ±7 10 mV [1] Typicals are based on worse case mean ±3 sigma values during production or production and qualification. ACS37002LLAATR-025U3 Gain_Sel Pin Performance Key Selection Identifier Parameter (Units) Gain_Sel_1 (Boolean) Gain_Sel_0 (Boolean) Sens (mV/A) Max IP (A) Type Digital Input Digital Input Calculation Bidirectional Selection Combination 0 0 105.6 25 0 1 88 30 1 0 70.4 37.5 1 1 52.8 50 ACS37002LLAATR-025U3

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com Figure 4: Power States Thresholds with VIOUT Behavior for a 5 V Device, RL = Pull-Down, UVD Enabled HI Z HI Z HI Z HI Z Time Voltage 5 V VUVD(H) VUVD(L) VPOR(H) VPOR(L) QVO 2.5 V VOVD(L) VOVD(H) 2 3 5 6 7 8 VCC VIOUT 1 1 VOVDHys VUVDHys VPORHys Time HI Z tPORR VCC VOUT Voltage 5 V VUVD(H) VPOR(H) QVO 2.5 V tPOD A tPOR-OUT Figure 5: tPOD behavior UVD disabled, RL = Pull-Up FUNCTIONAL DESCRIPTION Power-On Reset Operation The descriptions in this section assume: temperature = 25°C, with the labeled test conditions. The provided graphs in this section show VIOUT moving with VCC. The voltage of VIOUT during a high-impedance state will be most consistent with a known load (RLOAD,CLOAD). POWER-ON As VCC ramps up, the ACS37002's VIOUT and VREF pins are high impedance until VCC reaches and passes VUVD(H) [2] (or VPOR(H) [1] if UVD is disabled). Once VCC passes [2], the device takes some time without VCC dropping below VPOR(L) [8] before the device enters normal operation. POWER-OFF As VCC drops below VPOR(L) [8], the outputs will enter a high- impedance state. If UVD is enabled, before the device powers off, it will force VIOUT to GND if VCC < VUVD(L) [6] until VPOR(L) [8] (seen in Figure 4 and Figure 6) is reached, at which point VIOUT and VREF will go high Z. If UVD is disabled, then VREF and VIOUT will continue to report until VCC is less than VPOR(L) [8] (seen in Figure 7), at which point they will go high Z. Note: Since the device is entering a high Z state, and not driving the output, the time it takes the output to reach a steady state will depend on the external circuitry used. POWER-ON RESET (POR) If VCC falls below VPOR(L) [8] while in operation, the output will re-enter a high-impedance state. After VCC recovers and exceeds VUVD(H) [2], the output will begin reporting again after the delay of tPOD. POWER-ON DELAY (T POD) When the supply is ramped to VUVD(H) (seen in Figure 5 as [2]), the device will require a finite time to power its internal compo- nents before the outputs are released from high Z and can respond to an input magnetic field. Power-On Time, tPOD, is defined as the time it takes for the output voltage to settle within ±10% of its steady-state value under an applied magnetic field, which can be seen the time from [2] to [A]. After this delay, the output will quickly approach VIOUT(IP) = Sens × IP + VREF.

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com HI Z HI Z HI Z HI Z HI Z HI Z HI Z Time Voltage 5 V VUVD(H) VUVD(L) VPOR(H) VPOR(L) QVO 2.5 V VOVD(L) VOVD(H) 2 3 5 6 7 8 VCC VIOUT 1 1 VOVDHys VUVDHys VPORHys VREF VREF(Ideal) 2 4 5 6 7 6 78 6 8 Time Voltage Figure 6: Power States Thresholds with VIOUT and VREF Behavior, 5 V Device, RL = Pull-Up, UVD Enabled HI Z HI Z HI Z HI Z HI Z HI Z HI Z Time Voltage 5 V VPOR(H) VPOR(L) QVO 1.65 V VOVD(L) VOVD(H) VCC VIOUT 1 1 VOVDHys VPORHys VREF VREF(Ideal) 4 5 8 8 Time Voltage 1 3.3V Actual Performance Figure 7: Power States Thresholds with VIOUT and VREF Behavior, 3.3 V Device, RL = Pull-Up, UVD Disabled Overvoltage and Undervoltage Detection (OVD/UVD) To ensure that the device’s output is reporting accurately, the device contains an overvoltage and an undervoltage detection flag. This flag on VIOUT can be used to alert the system when the supply voltage for the device is outside of the operational range. UVD is only active on 5 V devices. UNDERVOLTAGE DETECTION VOLTAGE THRESHOLDS (V UVD(H/L) ) The 5 V ACS37002 is factory-programmed with UVD enabled. It is important to note that when powering up the device for the first time after a POR event, VIOUT and VREF will remain high Z until VCC is raised above VUVD(H) (seen in Figure 6 as [2]), at which point the VIOUT and VREF outputs will begin to normal operation. If UVD is disabled or it is a 3.3 V device, VIOUT and VREF will begin report after VCC raises above VPOR(H) (seen in Figure 7 as [1]) under the same conditions. If VCC drops below VUVD(L) [6] after normal operation, VIOUT will pull to GND regardless of RLOAD configuration. The VIOUT will remain at GND until VCC raises above VUVD(H) [7] or VCC falls below VPOR(L) [8]. If VCC rises above VUVD(H) [7] after a UVD, event, the VIOUT and VREF outputs will resume operation. If VCC drops below VPOR(L) [8], the device will enter a POR event and reset; VIOUT and VREF will switch to high Z if this occurs. OVERVOLTAGE DETECTION VOLTAGE THRESHOLDS (V OVD(H/L) ) When VCC raises above VOVD(H) (seen in Figure 6 as [4]), the

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com Figure 8: tPOD, tOVD(E/D), and tUVD(E/D) with RL = Pull-Up HI Z HI Z Time Voltage 5 V VUVD(H) VUVD(L) VPOR(H) VPOR(L) QVO 2.5 V VOVD(L) VOVD(H) VCC VIOUT VOVDHys VUVDHys VPORHys tOVD(E) B tPOD A tOVD(D) C tUVD(D) E tUVD(E) D output of the VREF and VIOUT pin will go high Z, VREF be pulled to GND, and VIOUT will be pulled to either VCC or GND, depending if RLoad is in a pull-up or pull-down configuration. OVERVOLTAGE/UNDERVOLTAGE DETECTION HYSTERESIS (V OVD(HYS) , VUVD(HYS) ) There is hysteresis between enable and disable thresholds to reducing nuisance flagging and clears. There is approximately 1 V and 0.4 V of hysteresis for Overvoltage and Undervoltage respectively. These can be seen represented in Figure 6 between the relevant thresholds. OVERVOLTAGE AND UNDERVOLTAGE ENABLE AND DISABLE TIME (T OVD(E/D) , TUVD(E/D) ) The enable time for OVD, tOVD(E), is the time from VOVD(H) [4] to OVD flag [B] in Figure 8. The UVD enable time, tUVD(E), is the time from VUVD(L) [6] to the UVD flag [D], also in Figure 8. The enable flag for both OVD and UVD has a counter to reduce transients faster than 64 µs from triggering nuisance flags. If VCC ramps from >VUVD(L) [6] to <VPOR(L) [8] (both seen in Figure 8) faster than tUVD(E), then the device will not have time to report a UVD event before power off occurs. The disable time for OVD, tOVD(D), is the time from VOVD(L) [5] to the OVD clear to normal operation [C] in Figure 8. The UVD disable time, tUVD(D), is the time from VUVD(H) [7] to the point that the UVD flag clears and VIOUT returns to nominal opera- tion [E], also seen in Figure 8. The disable time does not have a counter for either UVD or UVD to release the output and resume reporting. SUPPLY ZENER CLAMP VOLTAGES If the voltage applied to the device continues to increase past overvoltage detection, there is a point when the Zener diodes will turn on. These internal diodes are in place to protect the device from short high voltage or ESD events and should NOT be used as a feature to reduce the voltage on a line. Continued exposure to voltages higher than normal operating voltage, VCC, can weaken or damage the Zener diodes, which will potentially damage the part.

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com Absolute Maximum Ratings These are the maximum application or environmental conditions that the device can be subjected before damage may occur. FORWARD AND REVERSE SUPPLY VOLTAGE These are the largest voltage magnitudes that can be supplied to VCC from GND during programing or transient switching. This voltage should not be used as a DC voltage bias for an extended time. FORWARD AND REVERSE OUTPUT VOLTAGE The Forward Output V oltage or VFIOUT voltage can be no greater than VCC + 0.5 up to 6.5 V . This is the greatest voltage that the output can be biased with from GND during programming or transient switching. The Reverse Output V oltage or VRIOUT should not drop below –0.5 V during programming or transient switching. These voltages should not be used as a DC voltage bias for an extended time. FORWARD AND REVERSE REFERENCE/FAULT VOLTAGE The Forward Reference/Fault V oltage or VF-RF voltage can be no greater than VCC + 0.5 up to 6.5 V . This is the greatest voltage that the VREF and VOCF can be biased with from GND during programming or transient switching. The Reverse Output V oltage or VR-RF should not drop below –0.5 V during programming or transient switching. These voltages should not be used as a DC voltage bias for an extended time. OUTPUT SOURCE AND SINK CURRENT This is the maximum current that VIOUT can passively sink or source before damage may occur. AMBIENT TEMPERATURE (T A) This is the ambient temperature of the device. The Operating Ambient Temperature Range is the ambient temperature range that the Common Electricals and Common Performance Char- acteristics limits are valid. The Optimized Ambient Temperature Range is the ambient temperature range that the device-specific performance characteristics limits are valid. ACS37002L devices have optimized performance in the –40°C to 150°C (“L” temper- ature) range. ACS37002K devices have optimized performance in the –40°C to 125°C (“K” temperature) range. The –40°C to 125°C (“K” temperature) range devices have Device Specific Performance optimized within the –40°C to 125°C temperature range but will still operate in the –40°C to 150°C (“L” tempera- ture) range.

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com Figure 9: Offset (VOFF) Between VIOUT and VREF DEFINITIONS OF OPERATING AND PERFORMANCE CHARACTERISTICS Figure 10: VOOR, VSAT and SENS with Full Scale Zero Current Voltage Output (VIOUT(Q), QVO) Zero Current V oltage Output or VIOUT(Q) (also called QVO) is defined as the voltage on the output, VIOUT when zero amps are applied through IP. QVO Temperature Drift (VQE) QVO Temperature Drift, or VQE, is defined as the drift of QVO from room to hot or room to cold (25°C to 125/150°C or 25°C to –40°C respectively). To improve over temperature performance the temperature drift is compensated with Allegro’s factory trim to remain within the limits across temperature. Reference Voltage (VREF) There is a V oltage Reference Output, (VREF) on the ACS37002. This output reports the zero-current voltage for the output channel VIOUT allowing for differential measurement and a device referred supply for the VOC pin. Reference Voltage Temperature Drift (VRE) Reference V oltage Temperature Drift, or VRE, is defined as the drift of VREF from room to hot or room to cold (25°C to 125/150°C or 25°C to –40°C respectively). Offset Voltage (VOE) Offset V oltage, or VOE, is defined as the difference between QVO and VREF (see Figure 9). VOE includes the drift of QVO minus VREF from room to hot or room to cold (25°C to 125/150°C or 25°C to –40°C respectively). Output Saturation Voltage (VSAT(HIGH/LOW)) Output Saturation V oltage, or VSAT, is defined as the voltage that the VIOUT does not pass as a result to an increasing magnitude of current. VSAT(HIGH) is the highest voltage the output can drive to while, VSAT(LOW) is the lowest. This can be seen in Figure 10. Note that changing the sensitivity does not change the VSAT points. OUTPUT VOLTAGE OPERATING RANGE (V OOR) The Output V oltage Operating Range, or VOOR, is the functional range for linear performance of V IOUT and its related datasheet parameters. This can be seen in Figure 10. The VOOR is the output region that the performance accuracy parameters are valid. It is possible for the output to report beyond these voltages until VSAT, but certain parameters cannot be guaranteed. The output perfor - mance is demonstrated in Figure 10 through and beyond the VOOR. Voltage Output Operating Range for VCC and Output Modes, VOOR(Vcc, Mode) VCC (V) Bidrectional Unidirectional 3.3 ±1.32 +2.64 5 ±2 +4

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com Figure 11: Output Accuracy Pocket for Room and Across Temperature Sensitivity (Sens) Sensitivity, or Sens, is the ratio of the output swing versus the applied current through the primary conductor, IP. This current causes a voltage deviation away from QVO on the VIOUT output until VSAT. The magnitude and direction of the output volt- age swing is proportional to the magnitude and direction of the applied current. This proportional relationship between output and input is Sensitivity and is defined as: Sens = I1 – I2 VOUT(I1) – VOUT(I2) where I1 and I2 are two different currents, and where VIOUT(I1) and VIOUT(I2) are the voltages of the device at the applied cur- rents. VIOUT, I1, or I2 can be QVO with zero current. Sensitivity Error (Esens) Sensitivity Temperature Drift, or Esens, is the drift of Sens from room to hot or room to cold (25°C to 125°C or 25°C to –40°C respectively). No trimming/programming is needed as tempera- ture drift is compensated with Allegro’s factory trim. Gain Selection Pins The ACS37002 features external gain selection pins that config- ures the device sensitivity. The gain select logic is latched based on the pin voltage at startup. Either pin may be shorted directly to VCC or GND, which is logic 1 or 0 respectively. Both pins include an internal 1 MΩ pull-down resistor to GND. Exter- nally floating pins will be interpreted as logic 0; if both pins are floating, the device will be in the 00 configuration. Specific gain select performance can be found in the selection Performance Characteristics table. To change the gain of the device, refer to Figure 21 in the Application and Theory section. Full Scale (FS) Full Scale, or FS, is a method to relate an input and/or output to the max input and/or output of the device. For example, 50%FS of a 10A sensor is 5A, or 50% of its maximum input current. The 50% input of 5A will cause the output to move 50%, or 50%FS. FS is used to interchangeably refer to input and output deviations when discussing input steps, fault trip thresholds and relating input to output performance. FSINPUT is the input bias that results in FSOUTPUT and these two are directly related by the device actual sensitivity. Both FS can be seen in Figure 10, labeled as positive or negative FS input and FS output. The equation for input referred FS for a 5V bidirectional device is: FS = VOOR(5V ,Bi)/SensActual= ±2V/SensActual Note: that a percentage change in FSINPUT is equivalent to a resultant percentage change of FSOUTPUT and visa versa. Nonlinearity (ELIN) As the amount of field applied to the part changes, the sensitiv- ity of the device can also change slightly. This is referred to as linearity error or ELIN (see Figure 12). Consider two currents, I1(1/2 FS) and I2(FS). Ideally, the sensitivity of the device is the same for both fields. Linearity Error is calculated as the percent change in sensitivity from one field to another. Error is calculated separately for positive (ELIN(+)) and negative (ELIN(-)) currents, and the percent errors are defined as: where: SensIx+ = (VIOUTIx+ – VREF) / Ix+ and SensIx- = (VIOUTIx- – VREF) / Ix- Ix are positive and negative currents through IP, such that |I+2| = 2 × | I+1| and | I-2| = 2 × | I-1|.ELIN = max(ELIN(+) , ELIN(-))

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com Figure 12: Accuracy Error Total Output Error (ETOT) The Total Output Error is the current measurement error from the sensor IC as a percentage of the actual applied current. This is equivalent to the difference between the ideal output voltage and the actual output voltage, divided by the ideal sensitivity, relative to the current applied to the device, or simplified to: where V IOUT_Actual(I±) = ±I × SensActual + QVOActual and V IOUT_Ideal(I±) = ±I × SensIdeal + VREF_Actual Total Output Error incorporates all sources of error and is a func- tion of current. At relatively high currents, Total Output Error will be mostly due to sensitivity error, and at relatively low inputs, Total Output Error will be mostly due to Offset V oltage (VOE). At I = 0 A, Total Output Error approaches infinity due to the offset. An example of total error at FS can be seen in Figure 12. Note: Total Output Error goes to infinity as the amount of applied field approaches 0 A. Power Supply Offset Error (VPS) Power Supply Offset Error or VPS is defined at the offset error in mV between VCC and VCC ±10% VCC. For a 5 V device, this is 5 3.3 to 3.6 V . Offset Power Supply Rejection Ratio (PSRRO) The Offset Power Supply Rejection Ratio or PSRRO is defined as 20 × log of the ratio of the change of QVO in volts over a ±100 mV variable AC VCC centered at 5 V reported as dB in a specified frequency range. This is an AC version of the VPS parameter. The equation is shown below: Power Supply Sensitivity Error (EPS) Power Supply Sensitivity Error, or EPS, is defined as the percent sensitivity error measured between VCC and VCC ±10%. For a 5 V device, this is 5 to 4.5 V and 5 to 5.5 V . For a 3.3 V device, this is 3.3 to 3 V and 3.3 to 3.6 V . Sensitivity Power Supply Rejection Ratio (PSRRS) The Sensitivity Power Supply Rejection Ratio or PSRRS is defined as 20 × log of the ratio of the % change the sensitivity over the % change in VCC (±100 mV variable AC VCC centered at 5 V) reported as dB in a specified frequency range. This is the AC version of the EPS parameter. The equation is shown below:

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com Hi Z Hi ZHi Z Vpull-up IOCF-OP(Enable) IOCF-OP(Disable) OCFhys|Current| GND GNDVOCF Figure 13: Fault Thresholds and OCF Pin Functionality IFAULT (A) VOC (V) IFAULT(max) = 2.0 × FS (bidirectional) 1.0 × FS (unidirectional) IFAULT(min) = 0.5 × FS (bidirectional) 0.25 × FS (unidirectional) VOC(VCC)min VOC(VCC)max Figure 14: VOC Functional Range Overcurrent Fault (OCF) As the output swings, the Overcurrent Fault pin will trigger with an active low flag if the sensed current exceeds its comparator threshold. This is internally compared with either the factory- programmed thresholds or via the VOC voltage when VVOC > 0.1 V . This flag trips symmetrically for the positive and negative OCF operating point. The implementation for the OCF circuitry is accurate over temperature and does not require further temperature compensa- tion as it is dependent on the Sens and VOFF parameters that are factory-trimmed flat over temperature.. OVERCURRENT FAULT OPERATING RANGE/POINT (IOCF-OR , IOCF-OP ) Overcurrent Fault Operating Range is the functional range that the OCF thresholds can be set in terms of percentage of full-scale output swing. The Overcurrent Fault Operating Point is the spe - cific point at which the OCF trigger will occur, and is set by either VVOC or the factory default setting. The I OCF-OP can be seen in Figure 13 as [9] along with the FAULT pin functionality. OVERCURRENT FAULT HYSTERESIS (I OCF-HYST ) Overcurrent Fault Hysteresis or IOCF-HYST is defined as the magnitude of percent FS that must drop before a fault assertion will be cleared. This can be seen as the separation between the voltages [9] to [10] in Figure 13. Note the MASK and HOLD functionality are independent of each other. The ACS37002 comes standard with an OCFHYS of 120 mV (on the output) or 6%FS for a 5 V device and 9%FS for a 3.3 V device. VOLTAGE OVERCURRENT PIN (VOC) The fault trip points can be set using the VOC pin as the direct analog input for the fault trip point. The VOC pin voltage can be set using resistor dividers from VREF on bidirectional devices. The fault performance is valid when VVOC is within the VOC Operating V oltage Range or <0.1 V . The device will respond to voltage outside of the defined valid performance region with varied results. For a 5 V bidirectional device, setting the VOC pin to 0.5 V selects the minimum trip point, IFAULT(min), and setting the pin to 2 V selects the maximum trip point, IFAULT(max) as defined by selection performance tables. All voltages between 0.5 to 2 V for 5 V option and 0.33 to 1.321 V for 3.3 V option can linearly select a trip point between the minimum and maximum levels, as shown in Figure 14. When VOC < 0.1 V , the internal EEPROM fault level will be used. The resulting equation for the fault is: OCF%FS [%] = VOC(VCC) [V] VOC(VCC)100% [V] × 100 [%] IOCF [A] = OCF%FS [%] × IPR [A] Table 1: VOC(Vcc) thresholds and corresponding percentage of the Full-Scale Output for Bidirectional and Unidirectional operational modes VOC(3.3V) (V) VOC(5V) (V) Fault Operation Point %FS Bidirectional Unidirectional <0.1 100% (factory default) 50% (factory default) 0.330 0.5 50% 25% 0.466 0.75 75% 37.5% 0.661 1 100% 50% 0.826 1.25 125% 62.5% 0.991 1.5 150% 75% 1.156 1.75 175% 85% 1.321 2 200% 100% FAULT BEHAVIOR

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com Figure 15: General Fault Timing. Note: the MASK and HOLD functionality are independent of each other Figure 16: Fault Condition Clearing Before Mask Time Is Reached Figure 17: Fault Hold with Clear Fault After Hold Time OVERCURRENT FAULT ERROR (E OCF) Fault Error or EOCF is the error between the IOCF-OP(actual) and IOCF-OP(ideal). OVERCURRENT FAULT RESPONSE TIME ( tOCF) Overcurrent Response Time or tOCF is defined as the time from the input reaches the operating point [9] (seen in Figure 15) until the OCF pin falls below VFAULT-ON [G]. If the OCF Mask is disabled, then tOCF is equal to tOCF-R seen as the time from [9] until [F]. OVERCURRENT FAULT REACTION TIME ( tOCF-R) Overcurrent Reaction Time or tOCF-R is defined as the time from the current input rising above IOCF-OP at point [9] in Figure 15 until the OCF pin reaches VOCF-ON at point [F] with the OCF mask dis- able. This is the time required for the device to recognize and clear the fault, seen as the time between [10] until [I]. OVERCURRENT FAULT MASK TIME ( tOCF-MASK ) Overcurrent Fault Mask Time or tOCF-MASK is defined as the additional amount of time the OCF must be present beyond the tOCF-R time (seen in Figure 15 [F] until [G]). This is to reduce nuisance tripping of the FAULT pin. If an OCF occurs, but does not persist beyond tOCF-R + tOCF-MASK, it is not reported by the device (seen in Figure 16). This prevents short transient spikes from causing erroneous OCF flagging. Factory default setting is tOCF-MASK = 0 µs. OVERCURRENT FAULT HOLD TIME ( tOCF-HOLD ) Overcurrent Fault Hold Time or tOCF-HOLD is defined as the minimum time OCF flag will be asserted after a sufficient OCF event. After the hold time has been reached, the OCF will release if the OCF condition has ended (seen in Figure 15 [G] until [J]) or persist if the OCF condition is still present (seen in Figure 17 [G] until [J]). Factory default is 0 ms. OVERCURRENT FAULT PERSIST The ACS37002 has a fault persist option that will maintain the OCF flag if a flag occurred until a POR event. OCF DISABLE The ACS37002 has the ability to disable overcurrent fault func- tionality; when this is disabled, the OCF pin will remain in high

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com VIOUT(%) Time 100% 90% 10% Propagation Delay (tPD) Rise Time (tR) Response Time (tRESPONSE) Input Output Figure 18: Dynamic Response Parameters The descriptions in this section assume: temperature =25°C, and output loads are within limits on Common Electrical table. The step applied is a input step that corresponds to 1 V deviation on the output, unless otherwise stated. Propagation Time (tpd) The time interval between a) when the sensed current reaches 10% of its stable value, and b) when the sensor output reaches 10% of its stable value for a step input. See Figure 18. Rise Time (tR) The time interval between a) when the sensor reaches 10% of its stable value, and b) when it reaches 90% of the stable value for a step input. See Figure 18. Response Time (tRESPONSE) The time interval between a) when the sensed current reaches 90% of its stable value, and b) when the sensor output reaches 90% of its stable value. See Figure 18. Temperature Compensation To help compensate for the effects temperature has on perfor- mance, the ACS37002 has an integrated internal temperature sen- sor. This sensor and compensation algorithms help to standardize device performance over the full range of optimized tempera- tures. This allows for room temperature system calibration and validation of end-of-line modules. Temperature Compensation Update Rate There is an 8 ms update time that is required to maintain a valid temperature compensated output; that is, temperature compensa- tions are calculated and applied every 8 ms. DYNAMIC RESPONSE PARAMETERS

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com APPLICATION AND THEORY These configurations are simplified to the network required for functionality. Bypass and load capacitors are recommend for best performance. Application Circuits VOC Options GS Options GS0 GS1 VIOUT VOC 1 16 2 15 3 14 4 13 5 12 6 11 7 10 8 9 ACS37002 VCC VCC RPU OCF VREF GND GS Options GS = 01 GS0 GS1 VCC GS = 11 GS0 GS1 VCCGS = 10 GS0 GS1 VCC GS = 00 GS0 GS1 GS = 00 GS1 OCF Options RPU OCF VOther OCF pin can be pulled up to different supply if needed, as long as the pin voltage does not exceed the OCF max voltage rating. VOC Options (4) Non-inverting buffered VOC supply VOC = VREF×(1+R2/R1) Unidirectional ONLY RVREF VREF VOC R2R1 VCC NOTE: VREF error will also be gained into the VOC input. This should be considered when selecting or using configuration 4. (3a) No VOC supply EEPROM RVref VREF VOC (1) VREF supplied VOC VOC = VREF×(RVOC/(RVOC+RVREF)) Bidirectional ONLY RVref RVOC VREF VOC (2) Externally supplied VOC VOC = 0.2 V ↔2 V RVREF VREF VOC External Source GS0 (3b) No VOC supply EEPROM VREF VOC Figure 19: Applications Circuits for GAIN_SEL, VOC, and FAULT pin

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com Theory and Functionality – VOC and OCF VOC DRIVEN BY NON-INVERTING BUFFERED VREF If the VOC pin is being driven by a non-inverted buffered VREF, it is important to consider that any error from the VREF pin will be gained as well. For instance, if VREF error is +10 mV and the gain = 4 for the non-inverting operational amplifier, then the VOC pin will be 40 mV from the expected target. For unidirec- tional devices, OCF would be subjected to an additional 4% error due to the error propagation from VREF through the gain stage. POWER SUPPLY DECOUPLING CAPACITOR AND OUTPUT CAPACITIVE LOADS The higher the capacitive load on the outputs (VREF, VIOUT), the larger the decoupling capacitor should be on the power supply (VCC) to maintain performance. CLOAD CBYPASS 0 nF >100 nF 1 nF >100 nF 3 nF >1 µF 6 nF >10 µF Fault Filtering VOC Fault Logic Fault EEPROM Fault Threshold Fault Filtering OCF Fault Threshold >0.2 V Fault Logic Fault EEPROM VOC Signal Path Signal Path tmask = 0.5 µs, Range = 0-3 µs tHOLD = 0, Range = 0-3 ms OCF ... ... Simplified Detailed Time Delay to Make Connection Time Delay to Break Connection ... ... Figure 20: OCF Signal Path Simplified and Detailed Blocks of Functionality

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com Dynamically Change Gain in a System The ACS37002 has GAIN_SEL pins that are used to change the gain of the device on startup. If a more dynamic gain is desired, then reduce VCC below VPOR(L) and restart the device by return- ing VCC to the nominal voltage with the new desired GAIN_SEL configuration. The GAIN_SEL pin voltage must greater than the desired configuration voltage (VH(SEL) or VL(SEL)) at or before VCC > VPOR(H) in order to successfully change the device gain. The GAIN_SEL pin voltage is latched at startup, and any changes to the pin voltages after the devices VIOUT comes out of high Z will not affect gain. The cycle time to complete this operation is up to 2 × tPOD. Figure 21: GAIN_SEL Dynamic Gain Changing Timing Diagram

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com THERMAL PERFORMANCE Figure 22: Self heating in the MA and LA package due to current flow Figure 23: Maximum Continuous Current at a Given TA Figure 24: Top and Bottom Layers for ASEK37002 Evaluation Board Thermal Rise vs. Primary Current Self-heating due to the flow of current should be considered dur- ing the design of any current sensing system. The sensor, printed circuit board (PCB), and contacts to the PCB will generate heat as current moves through the system. The thermal response is highly dependent on PCB layout, copper thickness, cooling techniques, and the profile of the injected cur- rent. The current profile includes peak current, current “on-time”, and duty cycle. While the data presented in this section was collected with direct current (DC), these numbers may be used to approximate thermal response for both AC signals and current pulses. The plot in Figure 22 shows the measured rise in steady-state die temperature of the ACS37002 versus continuous current at an ambient temperature, TA, of 25 °C. The thermal offset curves may be directly applied to other values of TA. Conversely, Figure 23 shows the maximum continuous current at a given TA. Surges beyond the maximum current listed in Figure 24 are allowed given the maximum junction temperature, TJ(MAX) (165℃), is not exceeded. The thermal capacity of the ACS37002 should be verified by the end user in the application’s specific conditions. The maximum junction temperature, TJ(MAX) (165℃), should not be exceeded. Further information on this application testing is available in the DC and Transient Current Capability application note on the Allegro website. Evaluation Board Layout Thermal data shown in Figure 22 and Figure 23 was collected using the ASEK37002 Evaluation Board (TED-0002825). This board includes 750 mm2 of 4 oz. copper (0.1388 mm) connected to pins 1 through 4, and to pins 5 through 8, with thermal vias connecting the layers. Top and bottom layers of the PCB are shown below in Figure 24. Gerber files for the ASEK37002 evaluation board are available for download from the Allegro website. See the technical docu- ments section of the ACS37002 webpage.

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com Figure 25: Package MA, 16-Pin SOICW PACKAGE OUTLINE DRAWINGS For Reference Only – Not for Tooling Use (Reference MS-013AA) NOT TO SCALE Dimensions in millimeters Dimensions exclusive of mold flash, gate burrs, and dambar protrusions Exact case and lead configuration at supplier discretion within limits shown C

1.27 BSC

A B C Branding scale and appearance at supplier discretion C SEATING PLANE C0.10 16X

0.25 BSC

1.40 REF

2.65 MAX

10.30 ±0.20 0.51 0.31 0.30 0.10 0.33 0.20 1.27 0.40 A Branded Face SEATING PLANE GAUGE PLANE Terminal #1 mark area C 0.65 1.27 9.50 2.25 PCB Layout Reference View Reference land pattern layout (reference IPC7351 SOIC127P600X175-8M); all pads a minimum of 0.20 mm from all adjacent pads; adjust as necessary to meet application process requirements and PCB layout tolerances B Standard Branding Reference View NNNNNNN LLLLLLLL = Device part number = Assembly Lot Number, first eight characters N L 1.06 0.46 D D DH all elements; not to scale

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com C SEATING PLANE A Terminal #1 mark area B Reference land pattern layout (reference IPC7351 SOIC127P600X175-8M); all pads a minimum of 0.20 mm from all adjacent pads; adjust as necessary to meet application process requirements and PCB layout tolerances PCB Layout Reference View B C C Branding scale and appearance at supplier discretion C SEATING PLANEC0.10 16× For Reference Only; not for tooling use (reference MS-013AA) Dimensions in millimeters Dimensions exclusive of mold flash, gate burrs, and dambar protrusions Exact case and lead configuration at supplier discretion within limits shown 10.30 ±0.20 0.51 0.31 0.30 0.10 0.33 0.20 1.27 0.40 Line 1: Part Number Line 2: First 9 characters of Assembly Lot Number A Standard Branding Reference View 16 0.65 1.27 9.50 2.25 ACS37002 Lot Number ACS37002 Lot Number ACS37002 (5 V) ACS37002 (3.3 V) 16 0.65 1.27 9.75 1.65 High-Isolation PCB Layout Reference View D Hall elements (D1, D2); not to scale D D2 1.5132.466 DD Branded Face Figure 26: Package LA, 16-PIN SOICW

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains and Adjustable Overcurrent Fast Fault in SOICW-16 PackageACS37002 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com For the latest version of this document, visit our website: www.allegromicro.com

Revision History

– June 24, 2020 Initial release 1 July 8, 2020 Updated Features and Benefits, Selection Guide (page 2), Working Voltage values (page 4), Footnote 2 (pages 10-19), Voltage Overcurrent Pin section (page 30), and Branding (page 38)

2 October 16, 2020

Updated Features and Benefits, Description, and Figure 1 (page 1); added UL certification (page 2); updated Selection Guide table (page 2), Forward Output Voltage and Reverse Output Voltage symbols (page 3), Isolation Characteristics and MA Package Specific Performance tables (page 4), Supply Voltage, Supply Bypass Capacitor, Primary Conductor Resistance, Power-On Reset Voltage, Power-On Time, Undervoltage and Undervoltage Detection Threshold (page 7), Rise Time, Response Time, Propagation Delay Time, Noise Density (page 8), VOC Operating Voltage Range, OCF Reaction Time, OCF Mask, OCF Response Time (page 9); added footnote 4 (page 9); Performance Characteristic tables (pages 10-19); updated Current Sensing Range and Sensitivity values (pages 21-23); added Functional Description (pages 24-27), Definitions of Operating and Performance Characteristics (pages 28-32); updated Figure 20 (page 34),Theory and Functionality (pages 35-36).

3 December 16, 2020

Updated UVD and OVD Threshold test conditions (page 7); removed Overshoot and Settling Time sections and Figure 19 (page 33); fixed Figure 18 (page 33) graphical issue; updated Figure 19 (page 34), and other minor editorial updates. Copyright 2020, Allegro MicroSystems. Allegro MicroSystems reserves the right to make, from time to time, such departures from the detail specifications as may be required to permit improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that the information being relied upon is current. Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of Allegro’s product can reasonably be expected to cause bodily harm. The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems assumes no responsibility for its use; nor for any infringement of patents or other rights of third parties which may result from its use. Copies of this document are considered uncontrolled documents.