ACS724LLCTR-2P5AB-T

ACS724_V01 ALLEGRO | Alldatasheet

Document overview

• Manufacturer or author: Provided By alldatasheet.com(free datasheet download site)
• PDF pages: 25

Technical content

The Allegro™ ACS724 current sensor IC is an economical and precise solution for AC or DC current sensing in industrial, automotive, commercial, and communications systems. The small package is ideal for space-constrained applications while also saving costs due to reduced board area. Typical applications include motor control, load detection and management, switched- mode power supplies, and overcurrent fault protection. The device consists of a precise, low-offset, linear Hall sensor circuit with a copper conduction path located near the surface of the die. Applied current flowing through this copper conduction path generates a magnetic field which is sensed by the integrated Hall IC and converted into a proportional voltage. The current is sensed differentially in order to reject common-mode fields, improving accuracy in magnetically noisy environments. The inherent device accuracy is optimized through the close proximity of the magnetic field to the Hall transducer. A precise, proportional voltage is provided by the low-offset, chopper-stabilized BiCMOS Hall IC, which is programmed for accuracy after packaging. The output of the device has a positive slope when an increasing current flows through the primary copper conduction path (from pins 1 and 2, to pins 3 and 4), which is the path used for current sensing. The internal resistance of this conductive path is 1.2 mΩ typical, providing low power loss. The terminals of the conductive path are electrically isolated from the sensor leads (pins 5 through 8). This allows the ACS724 current sensor IC to be used in high-side current sense applications without the use of high-side differential amplifiers or other costly isolation techniques. ACS724-DS, Rev. 23 MCO-0000227

• AEC-Q100 qualified
• Differential Hall sensing rejects common-mode fields
• 1.2 mΩ primary conductor resistance for low power loss and high inrush current withstand capability
• Integrated shield virtually eliminates capacitive coupling from current conductor to die, greatly suppressing output noise due to high dv/dt transients
• Industry-leading noise performance with greatly improved bandwidth through proprietary amplifier and filter design techniques
• High-bandwidth 120 kHz analog output for faster response times in control applications
• Filter pin allows user to filter the output for improved resolution at lower bandwidth
• Patented integrated digital temperature compensation circuitry allows for near closed loop accuracy over temperature in an open loop sensor
• Small-footprint, low-profile SOIC8 package suitable for space-constrained applications
• Filter pin simplifies bandwidth limiting for better resolution at lower frequencies Automotive-Grade, Galvanically Isolated Current Sensor IC with Common-Mode Field Rejection in a Small-Footprint SOIC8 Package Continued on the next page… Typical Application CBYPASS 0.1 µF CF 1 nF ACS724 CLOAD IP++IP –IP IP+ IP– IP– VCC VIOUT FILTER GND IP The ACS724 outputs an analog signal, VIOUT , that changes proportionally with the bidirectional AC or DC primary sensed current, IP , within the specified measurement range. The FILTER pin can be used to decrease the bandwidth in order to optimize the noise performance. FEATURES AND BENEFITS DESCRIPTION PACKAGE : 8-Pin SOIC (suffix LC) CB Certificate Number: US-32848-UL TÜV America Certificate Number: U8V 18 02 54214 041 CB 14 11 54214 031 Continued on the next page… ACS724 June 6, 2024

Automotive-Grade, Galvanically Isolated Current Sensor IC with Common-Mode Field Rejection in a Small-Footprint SOIC8 PackageACS724 Allegro MicroSystems

955 Perimeter Road

Manchester, NH 03103-3353 U.S.A. www.allegromicro.com The ACS724 is provided in a small, low-profile surface-mount SOIC8 package. The leadframe is plated with 100% matte tin, which is compatible with standard lead (Pb) free printed circuit board assembly processes. Internally, the flip-chip device is considered Pb-free. However, the solder bump connections are available in a Pb-free or high-temperature Pb-based option. Part numbers followed by -S are manufactured with tin-silver-based solder bumps, making these parts Pb-free compliant without the use of RoHS exemptions. Part numbers followed by -T are manufactured with Pb-based solder bumps using allowed RoHS exemptions. FEATURES AND BENEFITS (continued)

• 5 V , single supply operation
• Output voltage proportional to AC or DC current
• Factory-trimmed sensitivity and quiescent output voltage for improved accuracy
• Chopper stabilization results in extremely stable quiescent output voltage
• Nearly zero magnetic hysteresis
• Ratiometric output from supply voltage DESCRIPTION (continued) SELECTION GUIDE Part Number IPR (A) Sens(Typ) at VCC = 5 V (mV/A) TA (°C) Packing -S VARIANT [1] ACS724LLCTR-2P5AB-S ±2.5 800 –40 to 150 Tape and Reel, 3000 pieces per reel ACS724LLCTR-05AU-S 5 ACS724LLCTR-05AB-S ±5 400 ACS724LLCTR-10AU-S 10 ACS724LLCTR-10AB-S ±10 200 ACS724LLCTR-20AU-S 20 ACS724LLCTR-20AB-S ±20 100 ACS724LLCTR-30AU-S 30 133 ACS724LLCTR-30AB-S ±30 66 ACS724LLCTR-50AB-S ±50 40 -T VARIANT [2] ACS724LLCTR-2P5AB-T ±2.5 800 –40 to 150 Tape and Reel, 3000 pieces per reel ACS724LLCTR-05AU-T 5 ACS724LLCTR-05AB-T ±5 400 ACS724LLCTR-10AU-T 10 ACS724LLCTR-10AB-T ±10 200 ACS724LLCTR-20AU-T 20 ACS724LLCTR-20AB-T ±20 100 ACS724LLCTR-30AU-T 30 133 ACS724LLCTR-30AB-T ±30 66 ACS724LLCTR-50AB-T ±50 40 [1] -S denotes the lead-free construction with tin-silver-based solder bumps. [2] -T denotes Pb-contained construction with Pb-based solder bumps. Operating performance of -T and -S devices are identical. -T devices are RoHS compliant using al- lowed exemptions provided in Annex III and IV of Directive 2011/65/EU [Exemptions 7(a), 15, 15(a), as applicable].

Automotive-Grade, Galvanically Isolated Current Sensor IC with Common-Mode Field Rejection in a Small-Footprint SOIC8 PackageACS724 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com THERMAL CHARACTERISTICS Characteristic Symbol Test Conditions* Value Units Package Thermal Resistance (Junction to Ambient) RθJA Mounted on the Allegro 85-0740 evaluation board with 1500 mm2 of 4 oz. copper on each side, connected to pins 1 and 2, and to pins 3 and 4, with thermal vias connecting the layers. Performance values include the power consumed by the PCB. 23 °C/W Package Thermal Resistance (Junction to Lead) RθJL Mounted on the Allegro ASEK724 evaluation board. 5 °C/W *Additional thermal information available on the Allegro website. ISOLATION CHARACTERISTICS Characteristic Symbol Notes Rating Unit Dielectric Surge Strength Test Voltage [1] VSURGE Tested ±5 pulses at 2/minute in compliance to IEC 61000-4-5 1.2 µs (rise) / 50 µs (width). 6000 V Dielectric Strength Test Voltage [1] VISO Agency type-tested for 60 seconds per UL standard 60950- 1 (edition 2); production-tested at VISO for 1 second, in accordance with UL 60950-1 (edition 2).

2400 VRMS

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

420 Vpk or VDC

297 Vrms

Clearance Dcl Minimum distance through air from IP leads to signal leads. 4.2 mm Creepage Dcr Minimum distance along package body from IP leads to signal leads. 4.2 mm Comparative Tracking Index CTI Material Group II 400 to 599 V [1] Certification pending. ABSOLUTE MAXIMUM RATINGS Characteristic Symbol Notes Rating Units Supply Voltage VCC 6 V Reverse Supply Voltage VRCC –0.1 V Output Voltage VIOUT VCC + 0.5 V Reverse Output Voltage VRIOUT –0.1 V Operating Ambient Temperature TA Range L –40 to 150 °C Junction Temperature TJ(max) 165 °C Storage Temperature Tstg –65 to 165 °C SPECIFICATIONS

Automotive-Grade, Galvanically Isolated Current Sensor IC with Common-Mode Field Rejection in a Small-Footprint SOIC8 PackageACS724 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com Dynamic Offset Cancellation Master Current Supply Programming Control EEPROM and Control Logic Offset ControlSensitivity Control Temperature Sensor Hall Current Drive POR To All Subcircuits IP+ IP+ IP– IP– VCC VCC VIOUT CBYPASS 0.1 µF FILTER RF(int) GND CF Terminal List Table Number Name Description 1, 2 IP+ Terminals for current being sensed; fused internally 3, 4 IP– Terminals for current being sensed; fused internally

5 GND Signal ground terminal

6 FILTER Terminal for external capacitor that sets bandwidth

7 VIOUT Analog output signal

8 VCC Device power supply terminal

Package LC, 8-Pin SOICN Pinout Diagram IP+ IP+ IP– IP– VCC VIOUT FILTER GND PINOUT DIAGRAM AND TERMINAL LIST TABLE

Automotive-Grade, Galvanically Isolated Current Sensor IC with Common-Mode Field Rejection in a Small-Footprint SOIC8 PackageACS724 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com Characteristic Symbol Test Conditions Min. Typ. Max. Unit Supply Voltage VCC 4.5 – 5.5 V Supply Current ICC VCC = 5 V, output open – 10 14 mA Output Capacitance Load CL VIOUT to GND – – 10 nF Output Resistive Load RL VIOUT to GND 4.7 – – kΩ Primary Conductor Resistance RIP TA = 25°C – 1.2 – mΩ Primary Conductor Inductance LIP TA = 25°C – 2 – nH Internal Filter Resistance [2] RF(int) – 1.8 – kΩ Common Mode Field Rejection Ratio CMFRR Uniform external magnetic field – 40 – dB Primary Hall Coupling Factor G1 TA = 25°C – 11 – G/A Secondary Hall Coupling Factor G2 TA = 25°C – 2.8 – G/A Hall Plate Sensitivity Matching Sensmatch TA = 25°C – ±1 – % Rise Time tr TA = 25°C, CL = 1 nF – 3 – μs Propagation Delay tpd TA = 25°C, CL = 1 nF – 2 – μs Response Time tRESPONSE TA = 25°C, CL = 1 nF – 4 – μs Output Slew Rate SR TA = 25°C, CL = 1 nF – 0.53 – V/μs Bandwidth BW Small signal –3 dB; CL = 1 nF – 120 – kHz Noise Density IND Input-referenced noise density; TA = 25°C, CL = 1 nF – 150 – µA(rms)/ √Hz Noise IN Input-referenced noise: CF = 4.7 nF, CL = 1 nF, BW = 18 kHz, TA = 25°C – 25 – mA(rms) Nonlinearity ELIN Through full range of IP –1.5 – 1.5 % Sensitivity Ratiometry Coefficient SENS_RAT_ COEF VCC = 4.5 to 5.5 V, TA = 25°C – 1.3 – – Zero-Current Output Ratiometry Coefficient QVO_RAT_ COEF VCC = 4.5 to 5.5 V, TA = 25°C – 1 – – Saturation Voltage [3] VOH RL = 4.7 kΩ – VCC – 0.3 – V VOL RL = 4.7 kΩ – 0.3 – V Power-On Time tPO TA = 25°C – 80 – μs Shorted Output-to-Ground Current ISC(GND) TA = 25°C – 3.3 – mA Shorted Output-to-VCC Current ISC(VCC) TA = 25°C – 45 – mA [1] Device may be operated at higher primary current levels, IP , ambient temperatures, TA , and internal leadframe temperatures, provided the Maximum Junction Tempera- ture, TJ(max), is not exceeded. [2] RF(int) forms an RC circuit via the FILTER pin. [3] The sensor IC will continue to respond to current beyond the range of IP until the high or low saturation voltage; however, the nonlinearity in this region will be worse than through the rest of the measurement range. COMMON ELECTRICAL CHARACTERISTICS [1]: Valid through the full range of TA , VCC = 5 V, CF = 0, unless otherwise specified

Automotive-Grade, Galvanically Isolated Current Sensor IC with Common-Mode Field Rejection in a Small-Footprint SOIC8 PackageACS724 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com xLLCTR-2P5AB PERFORMANCE CHARACTERISTICS: TA Range L, valid at TA = – 40°C to 150°C, VCC = 5 V, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ.[1] Max. Unit NOMINAL PERFORMANCE Current Sensing Range IPR –2.5 – 2.5 A Sensitivity Sens IPR(min) < IP < IPR(max) – 800 – mV/A Zero-Current Output Voltage VIOUT(Q) Bidirectional, IP = 0 A – VCC × 0.5 – V ACCURACY PERFORMANCE Total Output Error [2] ETOT IP = IPR(max), TA = 25°C to 150°C –2.5 ±1.5 2.5 % IP = IPR(max), TA = –40°C to 25°C –6.5 ±4.5 6.5 % TOTAL OUTPUT ERROR COMPONENTS [3] ETOT = ESENS + 100 × VOE/(Sens × IP) Sensitivity Error Esens IP = IPR(max), TA = 25°C to 150°C –2 ±1 2 % IP = IPR(max), TA = –40°C to 25°C –6 ±4.5 6 % Voltage Offset Error VOE IP = 0 A, TA = 25°C to 150°C –20 ±7 20 mV IP = 0 A, TA = –40°C to 25°C –40 ±13 40 mV LIFETIME DRIFT CHARACTERISTICS Sensitivity Error Lifetime Drift Esens_drift –3 ±1 3 % Total Output Error Lifetime Drift Etot_drift –3 ±1 3 % [1] Typical values with +/- are 3 sigma values. [2] Percentage of IP , with IP = IPR(max). [3] A single part will not have both the maximum/minimum sensitivity error and maximum/minimum offset voltage, as that would violate the maximum/minimum total output error specification. Also, 3 sigma distribution values are combined by taking the square root of the sum of the squares. See Application Information section.

Automotive-Grade, Galvanically Isolated Current Sensor IC with Common-Mode Field Rejection in a Small-Footprint SOIC8 PackageACS724 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com xLLCTR-05AU PERFORMANCE CHARACTERISTICS: TA Range L, valid at TA = – 40°C to 150°C, VCC = 5 V, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ.[1] Max. Unit NOMINAL PERFORMANCE Current Sensing Range IPR 0 – 5 A Sensitivity Sens IPR(min) < IP < IPR(max) – 800 – mV/A Zero-Current Output Voltage VIOUT(Q) Unidirectional, IP = 0 A – VCC × 0.1 – V ACCURACY PERFORMANCE Total Output Error [2] ETOT IP = IPR(max), TA = 25°C to 150°C –2.5 ±0.9 2.5 % IP = IPR(max), TA = –40°C to 25°C –6.5 ±4.6 6.5 % TOTAL OUTPUT ERROR COMPONENTS [3] ETOT = ESENS + 100 × VOE/(Sens × IP) Sensitivity Error Esens IP = IPR(max), TA = 25°C to 150°C –2 ±0.8 2 % IP = IPR(max), TA = –40°C to 25°C –6 ±4.5 6 % Voltage Offset Error VOE IP = 0 A, TA = 25°C to 150°C –20 ±10 20 mV IP = 0 A, TA = –40°C to 25°C –40 ±18 40 mV LIFETIME DRIFT CHARACTERISTICS Sensitivity Error Lifetime Drift Esens_drift –3 ±1 3 % Total Output Error Lifetime Drift Etot_drift –3 ±1 3 % [1] Typical values with +/- are 3 sigma values. [2] Percentage of IP , with IP = IPR(max). [3] A single part will not have both the maximum/minimum sensitivity error and maximum/minimum offset voltage, as that would violate the maximum/minimum total output error specification. Also, 3 sigma distribution values are combined by taking the square root of the sum of the squares. See Application Information section.

Automotive-Grade, Galvanically Isolated Current Sensor IC with Common-Mode Field Rejection in a Small-Footprint SOIC8 PackageACS724 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com xLLCTR-05AB PERFORMANCE CHARACTERISTICS: TA Range L, valid at TA = – 40°C to 150°C, VCC = 5 V, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ.[1] Max. Unit NOMINAL PERFORMANCE Current Sensing Range IPR –5 – 5 A Sensitivity Sens IPR(min) < IP < IPR(max) – 400 – mV/A Zero-Current Output Voltage VIOUT(Q) Bidirectional, IP = 0 A – VCC × 0.5 – V ACCURACY PERFORMANCE Total Output Error [2] ETOT IP = IPR(max), TA = 25°C to 150°C –2.5 ±1.5 2.5 % IP = IPR(max), TA = –40°C to 25°C –6 ±4.5 6 % TOTAL OUTPUT ERROR COMPONENTS [3] ETOT = ESENS + 100 × VOE/(Sens × IP) Sensitivity Error Esens IP = IPR(max), TA = 25°C to 150°C –2 ±1 2 % IP = IPR(max), TA = –40°C to 25°C –5.5 ±4.5 5.5 % Voltage Offset Error VOE IP = 0 A, TA = 25°C to 150°C –15 ±7 15 mV IP = 0 A, TA = –40°C to 25°C –30 ±13 30 mV LIFETIME DRIFT CHARACTERISTICS Sensitivity Error Lifetime Drift Esens_drift –3 ±1 3 % Total Output Error Lifetime Drift Etot_drift –3 ±1 3 % [1] Typical values with +/- are 3 sigma values. [2] Percentage of IP , with IP = IPR(max). [3] A single part will not have both the maximum/minimum sensitivity error and maximum/minimum offset voltage, as that would violate the maximum/minimum total output error specification. Also, 3 sigma distribution values are combined by taking the square root of the sum of the squares. See Application Information section.

Automotive-Grade, Galvanically Isolated Current Sensor IC with Common-Mode Field Rejection in a Small-Footprint SOIC8 PackageACS724 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com xLLCTR-10AU PERFORMANCE CHARACTERISTICS: TA Range L, valid at TA = – 40°C to 150°C, VCC = 5 V, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ.[1] Max. Unit NOMINAL PERFORMANCE Current-Sensing Range IPR 0 – 10 A Sensitivity Sens IPR(min) < IP < IPR(max) – 400 – mV/A Zero-Current Output Voltage VIOUT(Q) Unidirectional, IP = 0 A – VCC × 0.1 – V ACCURACY PERFORMANCE Total Output Error [2] ETOT IP = IPR(max), TA = 25°C to 150°C –2.5 ±1.5 2.5 % IP = IPR(max), TA = –40°C to 25°C –6 ±4.5 6 % TOTAL OUTPUT ERROR COMPONENTS [3] ETOT = ESENS + 100 × VOE/(Sens × IP) Sensitivity Error Esens IP = IPR(max), TA = 25°C to 150°C –2 ±1 2 % IP = IPR(max), TA = –40°C to 25°C –5.5 ±4.5 5.5 % Voltage Offset Error VOE IP = 0 A, TA = 25°C to 150°C –15 ±7 15 mV IP = 0 A, TA = –40°C to 25°C –30 ±13 30 mV LIFETIME DRIFT CHARACTERISTICS Sensitivity Error Lifetime Drift Esens_drift –3 ±1 3 % Total Output Error Lifetime Drift Etot_drift –3 ±1 3 % [1] Typical values with +/- are 3 sigma values. [2] Percentage of IP , with IP = IPR(max). [3] A single part will not have both the maximum/minimum sensitivity error and maximum/minimum offset voltage, as that would violate the maximum/minimum total output error specification. Also, 3 sigma distribution values are combined by taking the square root of the sum of the squares. See Application Information section.

Automotive-Grade, Galvanically Isolated Current Sensor IC with Common-Mode Field Rejection in a Small-Footprint SOIC8 PackageACS724 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com xLLCTR-10AB PERFORMANCE CHARACTERISTICS: TA Range L, valid at TA = – 40°C to 150°C, VCC = 5 V, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ.[1] Max. Unit NOMINAL PERFORMANCE Current-Sensing Range IPR –10 – 10 A Sensitivity Sens IPR(min) < IP < IPR(max) – 200 – mV/A Zero-Current Output Voltage VIOUT(Q) Bidirectional, IP = 0 A – VCC × 0.5 – V ACCURACY PERFORMANCE Total Output Error [2] ETOT IP = IPR(max), TA = 25°C to 150°C –2 ±1 2 % IP = IPR(max), TA = –40°C to 25°C –6 ±4.5 6 % TOTAL OUTPUT ERROR COMPONENTS [3] ETOT = ESENS + 100 × VOE/(Sens × IP) Sensitivity Error Esens IP = IPR(max), TA = 25°C to 150°C –1.5 ±1 1.5 % IP = IPR(max), TA = –40°C to 25°C –5.5 ±4.5 5.5 % Voltage Offset Error VOE IP = 0 A, TA = 25°C to 150°C –10 ±6 10 mV IP = 0 A, TA = –40°C to 25°C –30 ±8 30 mV LIFETIME DRIFT CHARACTERISTICS Sensitivity Error Lifetime Drift Esens_drift –3 ±1 3 % Total Output Error Lifetime Drift Etot_drift –3 ±1 3 % [1] Typical values with +/- are 3 sigma values. [2] Percentage of IP , with IP = IPR(max). [3] A single part will not have both the maximum/minimum sensitivity error and maximum/minimum offset voltage, as that would violate the maximum/minimum total output error specification. Also, 3 sigma distribution values are combined by taking the square root of the sum of the squares. See Application Information section.

Automotive-Grade, Galvanically Isolated Current Sensor IC with Common-Mode Field Rejection in a Small-Footprint SOIC8 PackageACS724 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com xLLCTR-20AU PERFORMANCE CHARACTERISTICS: TA Range L, valid at TA = – 40°C to 150°C, VCC = 5 V, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ.[1] Max. Unit NOMINAL PERFORMANCE Current-Sensing Range IPR 0 – 20 A Sensitivity Sens IPR(min) < IP < IPR(max) – 200 – mV/A Zero-Current Output Voltage VIOUT(Q) Unidirectional, IP = 0 A – VCC × 0.1 – V ACCURACY PERFORMANCE Total Output Error [2] ETOT IP = IPR(max), TA = 25°C to 150°C –2 ±0.7 2 % IP = IPR(max), TA = –40°C to 25°C –6 ±4 6 % TOTAL OUTPUT ERROR COMPONENTS [3] ETOT = ESENS + 100 × VOE/(Sens × IP) Sensitivity Error Esens IP = IPR(max), TA = 25°C to 150°C –1.5 ±0.7 1.5 % IP = IPR(max), TA = –40°C to 25°C –5.5 ±4 5.5 % Voltage Offset Error VOE IP = 0 A, TA = 25°C to 150°C –10 ±6 10 mV IP = 0 A, TA = –40°C to 25°C –30 ±8 30 mV LIFETIME DRIFT CHARACTERISTICS Sensitivity Error Lifetime Drift Esens_drift –3 ±1 3 % Total Output Error Lifetime Drift Etot_drift –3 ±1 3 % [1] Typical values with +/- are 3 sigma values. [2] Percentage of IP , with IP = IPR(max). [3] A single part will not have both the maximum/minimum sensitivity error and maximum/minimum offset voltage, as that would violate the maximum/minimum total output error specification. Also, 3 sigma distribution values are combined by taking the square root of the sum of the squares. See Application Information section.

Automotive-Grade, Galvanically Isolated Current Sensor IC with Common-Mode Field Rejection in a Small-Footprint SOIC8 PackageACS724 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com xLLCTR-20AB PERFORMANCE CHARACTERISTICS: TA Range L, valid at TA = – 40°C to 150°C, VCC = 5 V, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ.[1] Max. Unit NOMINAL PERFORMANCE Current-Sensing Range IPR –20 – 20 A Sensitivity Sens IPR(min) < IP < IPR(max) – 100 – mV/A Zero-Current Output Voltage VIOUT(Q) Bidirectional, IP = 0 A – VCC × 0.5 – V ACCURACY PERFORMANCE Total Output Error [2] ETOT IP = IPR(max), TA = 25°C to 150°C –2 ±0.8 2 % IP = IPR(max), TA = –40°C to 25°C –6 ±4 6 % TOTAL OUTPUT ERROR COMPONENTS [3] ETOT = ESENS + 100 × VOE/(Sens × IP) Sensitivity Error Esens IP = IPR(max), TA = 25°C to 150°C –1.5 ±0.6 1.5 % IP = IPR(max), TA = –40°C to 25°C –5.5 ±4 5.5 % Voltage Offset Error VOE IP = 0 A, TA = 25°C to 150°C –10 ±5 10 mV IP = 0 A, TA = –40°C to 25°C –30 ±6 30 mV LIFETIME DRIFT CHARACTERISTICS Sensitivity Error Lifetime Drift Esens_drift –3 ±1 3 % Total Output Error Lifetime Drift Etot_drift –3 ±1 3 % [1] Typical values with +/- are 3 sigma values. [2] Percentage of IP , with IP = IPR(max). [3] A single part will not have both the maximum/minimum sensitivity error and maximum/minimum offset voltage, as that would violate the maximum/minimum total output error specification. Also, 3 sigma distribution values are combined by taking the square root of the sum of the squares. See Application Information section.

Automotive-Grade, Galvanically Isolated Current Sensor IC with Common-Mode Field Rejection in a Small-Footprint SOIC8 PackageACS724 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com xLLCTR-30AU PERFORMANCE CHARACTERISTICS: TA Range L, valid at TA = – 40°C to 150°C, VCC = 5 V, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ.[1] Max. Unit NOMINAL PERFORMANCE Current-Sensing Range IPR 0 – 30 A Sensitivity Sens IPR(min) < IP < IPR(max) – 133 – mV/A Zero-Current Output Voltage VIOUT(Q) Unidirectional, IP = 0 A – VCC × 0.1 – V ACCURACY PERFORMANCE Total Output Error [2] ETOT IP = IPR(max), TA = 25°C to 150°C –2 ±0.7 2 % IP = IPR(max), TA = –40°C to 25°C –6 ±4 6 % TOTAL OUTPUT ERROR COMPONENTS [3] ETOT = ESENS + 100 × VOE/(Sens × IP) Sensitivity Error Esens IP = IPR(max), TA = 25°C to 150°C –1.5 ±0.7 1.5 % IP = IPR(max), TA = –40°C to 25°C –5.5 ±4 5.5 % Voltage Offset Error VOE IP = 0 A, TA = 25°C to 150°C –10 ±6 10 mV IP = 0 A, TA = –40°C to 25°C –30 ±7 30 mV LIFETIME DRIFT CHARACTERISTICS Sensitivity Error Lifetime Drift Esens_drift –3 ±1 3 % Total Output Error Lifetime Drift Etot_drift –3 ±1 3 % [1] Typical values with +/- are 3 sigma values. [2] Percentage of IP , with IP = IPR(max). [3] A single part will not have both the maximum/minimum sensitivity error and maximum/minimum offset voltage, as that would violate the maximum/minimum total output error specification. Also, 3 sigma distribution values are combined by taking the square root of the sum of the squares. See Application Information section.

Automotive-Grade, Galvanically Isolated Current Sensor IC with Common-Mode Field Rejection in a Small-Footprint SOIC8 PackageACS724 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com xLLCTR-30AB PERFORMANCE CHARACTERISTICS: TA Range L, valid at TA = – 40°C to 150°C, VCC = 5 V, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ.[1] Max. Unit NOMINAL PERFORMANCE Current-Sensing Range IPR –30 – 30 A Sensitivity Sens IPR(min) < IP < IPR(max) – 66 – mV/A Zero-Current Output Voltage VIOUT(Q) Bidirectional, IP = 0 A – VCC × 0.5 – V ACCURACY PERFORMANCE Total Output Error [2] ETOT IP = IPR(max), TA = 25°C to 150°C –2 ±0.8 2 % IP = IPR(max), TA = –40°C to 25°C –6 ±4 6 % TOTAL OUTPUT ERROR COMPONENTS [3] ETOT = ESENS + 100 × VOE/(Sens × IP) Sensitivity Error Esens IP = IPR(max), TA = 25°C to 150°C –1.5 ±0.8 1.5 % IP = IPR(max), TA = –40°C to 25°C –5.5 ±4 5.5 % Voltage Offset Error VOE IP = 0 A, TA = 25°C to 150°C –10 ±6 10 mV IP = 0 A, TA = –40°C to 25°C –30 ±6 30 mV LIFETIME DRIFT CHARACTERISTICS Sensitivity Error Lifetime Drift Esens_drift –3 ±1 3 % Total Output Error Lifetime Drift Etot_drift –3 ±1 3 % [1] Typical values with +/- are 3 sigma values. [2] Percentage of IP , with IP = IPR(max). [3] A single part will not have both the maximum/minimum sensitivity error and maximum/minimum offset voltage, as that would violate the maximum/minimum total output error specification. Also, 3 sigma distribution values are combined by taking the square root of the sum of the squares. See Application Information section.

Automotive-Grade, Galvanically Isolated Current Sensor IC with Common-Mode Field Rejection in a Small-Footprint SOIC8 PackageACS724 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com xLLCTR-50AB PERFORMANCE CHARACTERISTICS: TA Range L, valid at TA = – 40°C to 150°C, VCC = 5 V, CF = 0, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ.[1] Max. Unit NOMINAL PERFORMANCE Current-Sensing Range IPR –50 – 50 A Sensitivity Sens IPR(min) < IP < IPR(max) – 40 – mV/A Zero-Current Output Voltage VIOUT(Q) Bidirectional, IP = 0 A – VCC × 0.5 – V ACCURACY PERFORMANCE Total Output Error [2] ETOT IP = IPR(max), TA = 25°C to 150°C –2 ±0.8 2 % IP = IPR(max), TA = –40°C to 25°C –6 ±4 6 % TOTAL OUTPUT ERROR COMPONENTS [3] ETOT = ESENS + 100 × VOE/(Sens × IP) Sensitivity Error Esens IP = IPR(max), TA = 25°C to 150°C –1.5 ±0.8 1.5 % IP = IPR(max), TA = –40°C to 25°C –5.5 ±4 5.5 % Voltage Offset Error VOE IP = 0 A, TA = 25°C to 150°C –10 ±6 10 mV IP = 0 A, TA = –40°C to 25°C –30 ±6 30 mV LIFETIME DRIFT CHARACTERISTICS Sensitivity Error Lifetime Drift Esens_drift –3 ±1 3 % Total Output Error Lifetime Drift Etot_drift –3 ±1 3 % [1] Typical values with +/- are 3 sigma values. [2] Percentage of IP , with IP = IPR(max). [3] A single part will not have both the maximum/minimum sensitivity error and maximum/minimum offset voltage, as that would violate the maximum/minimum total output error specification. Also, 3 sigma distribution values are combined by taking the square root of the sum of the squares. See Application Information section.

Automotive-Grade, Galvanically Isolated Current Sensor IC with Common-Mode Field Rejection in a Small-Footprint SOIC8 PackageACS724 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com For information regarding bandwidth characterization methods used for the ACS724, see the “Characterizing System Bandwidth” application note (https://allegromicro.com/en/insights-and-innovations/technical-documents/hall-effect-sensor-ic-publications/an- effective-method-for-characterizing-system-bandwidth-an296169) on the Allegro website. CHARACTERISTIC PERFORMANCE ACS724 TYPICAL FREQUENCY RESPONSE -3dB ≈ 120 kHz

Automotive-Grade, Galvanically Isolated Current Sensor IC with Common-Mode Field Rejection in a Small-Footprint SOIC8 PackageACS724 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com RESPONSE CHARACTERISTICS DEFINITIONS AND PERFORMANCE DATA Response Time (tRESPONSE) The time interval between a) when the sensed input current reaches 90% of its final value, and b) when the sensor output reaches 90% of its full-scale value. Propagation Delay (tpd) The time interval between a) when the sensed input current reaches 20% of its full-scale value, and b) when the sensor output reaches 20% of its full-scale value. Rise Time (tr) The time interval between a) when the sensor reaches 10% of its full-scale value, and b) when it reaches 90% of its full-scale value. Output Slew Rate (SR) The rate of change [V/µs] in the output voltage from a) when the sensor reaches 10% of its full-scale value, and b) when it reaches 90% of its full-scale value. Response Time, Propagation Delay, Rise Time, and Output Slew Rate Applied current step with 10%-90% rise time = 1 μs Test Conditions: TA = 25°C, CBYPASS = 0.1 µF, CL = 0 F tRESPONSE tpd SR [V/μs] tr

Automotive-Grade, Galvanically Isolated Current Sensor IC with Common-Mode Field Rejection in a Small-Footprint SOIC8 PackageACS724 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com Power-On Time (tPO) When the supply is ramped to its operating voltage, the device requires a finite amount of time to power its internal components before responding to an input magnetic field. Power-On Time (tPO) is defined as the time interval between a) when the power supply has reached its minimum specified operating voltage (VCC(min)), and b) when the sensor output has settled within ±10% of its steady-state value under an applied magnetic field. Power-On Time (tPO) Test Conditions: TA = 25°C, CBYPASS = 0.1 µF, RPD = 10 kΩ, 1V Ouput Swing POWER ON FUNCTIONAL DESCRIPTION AND PERFORMANCE DATA Power-On Profile Supply voltage ramp rate = 1V/ms Test Conditions: TA = 25°C, CBYPASS = 0.1 µF, RPD = 10 kΩ Power-On Profile After applying power, the part remains off in a known state referred to as Power-on Reset, or POR. The device stays in this state until the voltage reaches a point at which the device will remain powered. The power-on profile below illustrates the intended power on/off. A pull-down resistor was used on the output of the tested device.

Automotive-Grade, Galvanically Isolated Current Sensor IC with Common-Mode Field Rejection in a Small-Footprint SOIC8 PackageACS724 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com

APPLICATION INFORMATION

Estimating Total Error vs. Sensed Current The Performance Characteristics tables give distribution (±3 sigma) values for Total Error at IPR(max); however, one often wants to know what error to expect at a particular current. This can be estimated by using the distribution data for the compo- nents of Total Error, Sensitivity Error, and V oltage Offset Error. The ±3 sigma value for Total Error (ETOT) as a function of the sensed current (IP) is estimated as: E( I) =TOTP E+SENS 2 100 × VOE Sens × IP Here, ESENS and VOE are the ±3 sigma values for those error terms. If there is an average sensitivity error or average offset voltage, then the average Total Error is estimated as: E( I) = E+TOTP SENS 100 × VOE Sens × IP AVGA VG AVG The resulting total error will be a sum of ETOT and ETOT_A VG. Using these equations and the 3 sigma distributions for Sensitiv- ity Error and V oltage Offset Error, the Total Error versus sensed current (IP) is below for the ACS724LLCTR-20AB. As expected, as one goes towards zero current, the error in percent goes towards infinity due to division by zero (refer to Figure 1). 0 5 10 15 20 -40ºC + 3σ -40ºC –3 σ 25ºC + 3σ 25ºC –3 σ 85ºC + 3σ 85ºC –3 σ Current (A) Total Error (% of Current Measured) Figure 1: Predicted Total Error as a Function of the Sensed Current for the ACS724LLCTR-20AB

Automotive-Grade, Galvanically Isolated Current Sensor IC with Common-Mode Field Rejection in a Small-Footprint SOIC8 PackageACS724 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 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 col - lected with Direct-Current (DC), these numbers may be used to approximate thermal response for both AC signals and current pulses. The plot in Figure 2 shows the measured rise in steady-state die temperature of the ACS724 versus continuous current at an ambi- ent temperature, TA, of 25 °C. The thermal offset curves may be directly applied to other values of TA. Conversely, Figure 3 shows the maximum continuous current at a given TA. Surges beyond the maximum current listed in Figure 3 are allowed given the maxi - mum junction temperature, TJ(MAX) (165℃), is not exceeded. Figure 2: Self Heating in the LC Package Due to Current Flow Figure 3: Maximum Continuous Current at a Given TA The thermal capacity of the ACS724 should be verified by the end user in the application’s specific conditions. The maximum junc - tion temperature, T J(MAX) (165℃), should not be exceeded. Fur - ther information on this application testing is available in the DC and Transient Current Capability application note on our website. ASEK724 Evaluation Board Layout Thermal data shown in Figure 2 and Figure 3 was collected using the ASEK724 Evaluation Board (TED-85-0740-003). This board includes 1500 mm2 of 4 oz. copper (0.1388 mm) connected to pins 1 and 2, and to pins 3 and 4, with thermal vias connecting the lay- ers. Top and Bottom layers of the PCB are shown below in Figure Figure 4: Top and Bottom Layers for ASEK724 Evaluation Board Gerber files for the ASEK724 evaluation board are available for download from the Allegro website. Please see the technical documents section of the ACS724 device webpage.

Automotive-Grade, Galvanically Isolated Current Sensor IC with Common-Mode Field Rejection in a Small-Footprint SOIC8 PackageACS724 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com Sensitivity (Sens). The change in sensor IC output in response to a 1 A change through the primary conductor. The sensitivity is the product of the magnetic circuit sensitivity (G / A) (1 G = 0.1 mT) and the linear IC amplifier gain (mV/G). The linear IC ampli- fier gain is programmed at the factory to optimize the sensitivity (mV/A) for the full-scale current of the device. Nonlinearity (ELIN). The nonlinearity is a measure of how linear the output of the sensor IC is over the full current measurement range. The nonlinearity is calculated as: E=LIN 1– V( I )–VIOUT PR(max) IOUT(Q) 2•V( I /2) –VIOUT PR(max) IOUT(Q)

• 100(%) where VIOUT(IPR(max)) is the output of the sensor IC with the maximum measurement current flowing through it and VIOUT(IPR(max)/2) is the output of the sensor IC with half of the maximum measurement current flowing through it. Zero-Current Output Voltage (VIOUT(Q)). The output of the sensor when the primary current is zero. For a unipolar supply voltage, it nominally remains at 0.5 × VCC for a bidirectional device and 0.1 × VCC for a unidirectional device. For example, in the case of a bidirectional output device, VCC = 5 V translates into VIOUT(Q) = 2.5 V . Variation in VIOUT(Q) can be attributed to the resolution of the Allegro linear IC quiescent voltage trim and thermal drift. Voltage Offset Error (VOE). The deviation of the device output from its ideal quiescent value of 0.5 × VCC (bidirectional) or 0.1 × VCC (unidirectional) due to nonmagnetic causes. To convert this voltage to amperes, divide by the device sensitivity, Sens. Total Output Error (ETOT). The difference between the cur- rent measurement from the sensor IC and the actual current (IP), relative to the actual 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 flowing through the primary conduction path: E( I)TOTP V( I )–V (I )IOUT_ideal PI OUT P Sens (I )•Iideal PP
• 100 (%)= The Total Output Error incorporates all sources of error and is a function of IP . At relatively high currents, ETOT will be mostly due to sensitivity error, and at relatively low currents, ETOT will be mostly due to V oltage Offset Error (VOE ). In fact, at IP = 0, ETOT approaches infinity due to the offset. This is illustrated in Figure 5 and Figure 6. Figure 5 shows a distribution of output voltages versus IP at 25°C and across temperature. Figure 6 shows the corresponding ETOT versus IP . DEFINITIONS OF ACCURACY CHARACTERISTICS Figure 5: Output Voltage versus Sensed Current Figure 6: Total Output Error versus Sensed Current 0 A Decreasing VIOUT (V) Accuracy Across Temperature Accuracy Across Temperature Accuracy Across Temperature Accuracy at 25°C Only Accuracy at 25°C Only Accuracy at 25°C Only Increasing VIOUT (V) Ideal VIOUT IPR(min) IPR(max) +IP (A) –IP (A) VIOUT(Q) Full Scale IP +IP–IP +ETOT –ETOT Across Temperature 25°C Only

Automotive-Grade, Galvanically Isolated Current Sensor IC with Common-Mode Field Rejection in a Small-Footprint SOIC8 PackageACS724 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com Sensitivity Ratiometry Coefficient (SENS_RAT_COEF). The coefficient defining how the sensitivity scales with VCC. The ideal coefficient is 1, meaning the sensitivity scales proportion- ally with VCC. A 10% increase in VCC results in a 10% increase in sensitivity. A coefficient of 1.1 means that the sensitivity increases by 10% more than the ideal proportionality case. This means that a 10% increase in VCC results in an 11% increase in sensitivity. This relationship is described by the following equa- tion: Sens(V ) = Sens(5 V)CC (V –5 V) •SENS_RAT_COEFCC

5 V1 +

This can be rearranged to define the sensitivity ratiometry coef- ficient as: Sens(5 V) (V –5 V)CC SENS_RAT_COEF = Sens(V )CC 5 V–1 • Zero-Current Output Ratiometry Coefficient (QVO_RAT_ COEF). The coefficient defining how the zero-current output voltage scales with VCC. The ideal coefficient is 1, meaning the output voltage scales proportionally with VCC, always being equal to VCC/2. A coefficient of 1.1 means that the zero-current output voltage increases by 10% more than the ideal proportion- ality case. This means that a 10% increase in VCC results in an 11% increase in the zero-current output voltage. This relationship is described by the following equation: VIOUTQ(V ) = VIOUTQ(5 V)CC (V –5 V) •QVO_RAT_COEFCC This can be rearranged to define the zero-current output ratiom- etry coefficient as: VIOUTQ(5 V) (V –5 V)CC QVO_RAT_COEF = VIOUTQ(V )CC 5 V•–1

Automotive-Grade, Galvanically Isolated Current Sensor IC with Common-Mode Field Rejection in a Small-Footprint SOIC8 PackageACS724 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com Figure 7: Package LC, 8-pin SOICN For Reference Only – Not for Tooling Use (Reference MS-012AA) Dimensions in millimeters –N OT TO SCALE Dimensions exclusive of mold flash, gate burrs, and dambar protrusions Exact case and lead configuration at supplier discretion within limits shown C SEATING PLANE

1.27 BSC

C C0.10

1.75 MAX

0.51 0.31 0.25 0.10 Branded Face A B C Branding scale and appearance at supplier discretion Terminal #1 mark area 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. 4.90 ±0.10 A

0.25 BSC

1.04 REF

0.25 0.17 1.27 0.40 SEATING PLANE GAUGE PLANE C 0.65 1.27 5.60 1.75 PCB Layout Reference View 1 1.27 7.35 Package Outline Slot in PCB to maintain 4.2 mm creepage once part is on PCB C 0.65 1.27 4.20 1.575 PCB Layout Reference View 2 7.35 For PCB assemblies that cannot support a slotted design, the above stretched footprint may be used. B Standard Branding Reference View 1 N = Device part number (number of characters will vary) P= Package Designator and Temperature Range A=Amperage/part variant L= Lot number Belly Brand = Country of Origin NNNNNNN PPT-AAA LLLLL DH all elements (D1, D2); not to scale D 1.71 ±0.10 2.45 ±0.10 D 1.67 ±0.10D B Standard Branding Reference View 2 N = Device part number (number of characters will vary) L= Lot number Belly Brand = Country of Origin NNNNNNN LLLLL Lot Number Lot Number PACKAGE OUTLINE DRAWING

Automotive-Grade, Galvanically Isolated Current Sensor IC with Common-Mode Field Rejection in a Small-Footprint SOIC8 PackageACS724 Allegro MicroSystems Manchester, NH 03103-3353 U.S.A. www.allegromicro.com

Revision History

Number Descriptioon Pages Responsible Date – Added Characteristic Performance graphs and Application Information to Preliminary draft to create Final draft All A. Latham January 16, 2015 1 Corrected Features and Benefits 2 A. Latham June 19, 2015 2 Added ACS724LLCTR-50AB-T variant with electrical characteristics 2, 9 A. Latham June 23, 2015

3 Corrected Characteristic Performance graph legends; updated Lifetime Drift

Characteristics and added Error Over Lifetime electrical characteristics 6-18 A. Latham, S. Milano August 12, 2015 4 Added ACS724LLCTR-05AB-T variant with electrical characteristics 2, 6 W. Bussing August 8, 2016 5 Added AEC-Q100 qualified status 1 W. Bussing June 28, 2017

6 Added ACS724LLCTR-05AB-T and ACS724LLCTR-50AB-T Characteristic

Performance graphs 14, 21 W. Bussing August 3, 2017 7 Updated Clearance and Creepage rating values 3 W. Bussing January 10, 2018 Added Dielectric Surge Strength Test Voltage characteristic 2 W. Bussing January 23, 2018 Added Common Mode Field Rejection Ratio characteristic 5 Added ACS724LLCTR-2P5AB-T variant with electrical characteristics 2, 6 W. Bussing April 13, 2018 Updated PCB Layout References in Package Outline Drawing 27 Added Hall dimensions in Package Outline Drawing 27 W. Bussing May 14, 2018Added ACS724LLCTR-40AU-T variant with electrical characteristics and performance graphs 2, 14, 23 Added ACS724LLCTR-2P5AB-T performance graphs 16 M. McNally June 22, 2018 Added Typical Frequency Response plots 26 W. Bussing 12 Added “Thermal Rise vs. Primary Current” and “ASEK724/5 Evaluation Board Layout” to the Applications Information section 28 W. Bussing July 3, 2018 13 Corrected ACS724LLCTR-40AU-T Total Output Error and Sensitivity Error values 14 M. McNally November 15, 2018 14 Updated certificate numbers 1 V. Mach December 13, 2018 15 Updated TUV certificate mark 1 M. McNally June 3, 2019 Added Maximum Current value to Absolute Maximum Ratings table; added ESD Ratings Table; updated Isolation Characteristics Table; updated Rise Time, Response Time, Propagation Delay, and Output Slew Rate test conditions; added Primary Conductor Inductance and Output Slew Rate values; added Typical Frequency Response application page; added Response Characteristics Definitions and Performance Data; added Power On Functional Description and Performance Data; added thermal data section; corrected Voltage Offset to Voltage Offset Error All K. Hampton April 3, 2020 17 Updated Functional Block Diagram 4 K. Hampton February 1, 2021

18 Removed Maximum Continuous Current from Absolute Maximum Ratings table;

added -S lead free part variants; updated Common Electrical Characteristics table All K. Hampton July 20, 2021

19 Added ACS724LLCTR-05AU-T and ACS724LLCTR-05AU-S variant with

electrical characteristics 3, 8 K. Hampton August 2, 2021

20 Removed Advanced designation from lead free part variants; removed ESD

Ratings table; removed ACS724LLCTR-40AU-T part variant; minor editorial edits 3 K. Hampton April 14, 2022 21 Merged Selection Guide tables 2 K. Hampton May 18, 2022 22 Updated Branding Reference View 23 K. Hampton July 10, 2023 23 Minor editorial correction 23 J. Henry June 6, 2024

Automotive-Grade, Galvanically Isolated Current Sensor IC with Common-Mode Field Rejection in a Small-Footprint SOIC8 PackageACS724 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 Copyright 2024, 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.