A432AE3RX

A431A AITSEMI | Alldatasheet

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AiT Semiconductor Inc. www.ait-ic.com A431A_A432A SHUNT REGULATOR HIGH TEMPERATURE ADJUSTABLE PRECISION REV1.0 - JUL 2019 RELEASED - - 1 - DESCRIPTION FEATURES The A431A and A432A devices are three -terminal adjustable shunt regulators, with specified thermal stability over applicable automotive, commercial, and military temperature ranges. The output voltage can be set to any value between V ref (approximately 2.5 V) and 36 V, with two external resistors. These devices have a typical output impedance of 0. 15 Ω. Active output circuitry provides a very sharp turn -on characteristic, making these devices excellent replacements for Zener diodes in many applications, such as onboard regulation, adjustable power supplies, and switching power supplies. The A432A device has exa ctly the same functionality and electrical specifications as the A431A device, but has different pinouts . Both the A431A and A432A devices are offered in two grades, with initial tolerances (at 25°C) of 0.5% for A, and 1%, for the B . In addition, low output drift versus temperature ensures good stability over the entire temperature range. The A431A and A432A devices are charac terized for operation from –40°C to 125°C. The A431 A and A432 A are available in SOT-23 package. ⚫ Reference Voltage Tolerance at 25°C -0.5% (A Grade) -1% (B Grade) ⚫ Adjustable Output Voltage: Vref to 36V ⚫ Operation From -40°C to 125°C ⚫ Low Output Noise ⚫ 0.15Ω Typical Output Impedance ⚫ Sink current capability of 0.5 to 100mA ⚫ Available in SOT-23 package.

APPLICATIONS

⚫ Adjustable Voltage and Current Referencing ⚫ Secondary Side Regulation in Flyback SMPS ⚫ Zener Replacement ⚫ Voltage Monitoring ⚫ Comparator with Integrated Reference TYPICAL APPLICATION

ORDERING INFORMATION

SPQ: 3,000pcs/Reel A431AE3R-X A431AE3VR-X A432AE3R-X A432AE3VR-X Note X: Output Voltage Tolerance: A or B, A=0.5%, B=1% R: Tape & Reel V: Halogen free Package AiT provides all RoHS products

AiT Semiconductor Inc. www.ait-ic.com A431A_A432A SHUNT REGULATOR HIGH TEMPERATURE ADJUSTABLE PRECISION REV1.0 - JUL 2019 RELEASED - - 2 - PIN DESCRIPTION A431A, SOT-23 Top View A432A, SOT-23 Top View Pin # Symbol Function A431A A432A 1 2 Cathode Shunt Current/Voltage input 2 1 Ref Threshold relative common anodes 3 3 Anode Common pin, normally connected to ground

AiT Semiconductor Inc. www.ait-ic.com A431A_A432A SHUNT REGULATOR HIGH TEMPERATURE ADJUSTABLE PRECISION REV1.0 - JUL 2019 RELEASED - - 3 - ABSOLUTE MAXIMUM RATINGS TA = 25℃, unless otherwise noted. VKA, Cathode Voltage SOT-23 -0.3V~37V IKA, Cathode Current Range (Continuous) -100mA~+150mA IREF, Reference Input Current Range -0.05mA~+10mA PD, Power Dissipation SOT-23 350mW TOPR, Operating Junction Temperature Range -40℃~+125℃ TJ, Junction Temperature 150℃ TSTG, Storage Temperature Range -55℃~ +150℃ V(ESD), Electrostatic Discharge Human-body model (HBM) ±4000V Charge device model (MM) ±200V Stress beyond above listed “Absolute Maximum Ratings” may lead permanent damage to the device. These are stress ratings only and operations of the device at these or any other conditions beyond those indicated in the operational sections of the specifications are not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. RECOMMENDED OPERATING CONDITIONS Parameter Symbol Conditions Min Typ. Max Unit Cathode Voltage VKA VREF - 36 V Cathode Current IKA 0.5 - 100 mA Operating Ambient Temperature Range TA -40 - +125 ℃

AiT Semiconductor Inc. www.ait-ic.com A431A_A432A SHUNT REGULATOR HIGH TEMPERATURE ADJUSTABLE PRECISION REV1.0 - JUL 2019 RELEASED - - 4 -

ELECTRICAL CHARACTERISTICS

Over recommended operating conditions, typical values are at TA = +25°C, unless otherwise noted. Parameter Symbol Conditions Min Typ. Max Unit Reference Input Voltage VREF VKA=VREF, IKA=10mA 0.5% 2.487 2.5 2.513 V 1% 2.475 2.5 2.525 Deviation of Reference Input Voltage Over Temperature ΔVREF/ ΔT VKA=VREF, IKA=10mA Tmin ≤ TA≤ Tmax - 4.5 23 mV Ratio of Change in Reference Input Voltage to the change in Cathode Voltage ΔVREF/ ΔVKA IKA=10mA ΔVKA=10V~VREF - -1.0 -2.7 mV/V ΔVKA=36V~ 10V - -0.5 -2.0 mV/V Reference Input Current IREF IKA=10mA, R1=10kΩ R2=∞ - 1.5 4 μA Deviation of Reference Input Current Over Full Temperature ΔIREF/ ΔT IKA=10mA, R1=10kΩ R2=∞ -40℃ ≤ TA ≤ +125℃ - 0.2 0.4 μA Minimum Cathode Current f or Regulation IKA(MIN) VKA=VREF - 0.3 0.5 mA Off-State Cathode Current IKA(OFF) VKA=36V, VREF=0V - 0.05 0.5 μA Dynamic Impedance ΙZKAΙ VKA=VREF, IKA=1 to 100mA, f≤1kHz - 0.15 0.5 Ω

AiT Semiconductor Inc. www.ait-ic.com A431A_A432A SHUNT REGULATOR HIGH TEMPERATURE ADJUSTABLE PRECISION REV1.0 - JUL 2019 RELEASED - - 5 - TYPICAL APPLICATIONS CIRCUIT 1. Shunt Regulator 2. High Current Shunt Regulator 3. Current Source or Current Limit

AiT Semiconductor Inc. www.ait-ic.com A431A_A432A SHUNT REGULATOR HIGH TEMPERATURE ADJUSTABLE PRECISION REV1.0 - JUL 2019 RELEASED - - 6 - TYPICAL PERFORMANCE CHARACTERISTICS 1. Cathode Current (mA) vs. Cathode Voltage 2. Cathode Current (uA) vs. Cathode Voltage 3. Change in Reference Input Voltage vs. Cathode Voltage 4. Pulse Response 5. Dynamic Impedance vs. Frequency 6. Small-Signal Voltage Amplification vs. Frequency

AiT Semiconductor Inc. www.ait-ic.com A431A_A432A SHUNT REGULATOR HIGH TEMPERATURE ADJUSTABLE PRECISION REV1.0 - JUL 2019 RELEASED - - 7 - 7. Cathode Current Vs Load Capacitance 8. Reference Voltage vs. Ambient Temperature BLOCK DIAGRAM

AiT Semiconductor Inc. www.ait-ic.com A431A_A432A SHUNT REGULATOR HIGH TEMPERATURE ADJUSTABLE PRECISION REV1.0 - JUL 2019 RELEASED - - 8 -

PACKAGE INFORMATION

Dimension in SOT-23 Package (Unit: mm) Symbol Millimeters Inches Min Max Min Max A 0.900 1.150 0.035 0.045 A1 0.000 0.100 0.000 0.004 A2 0.900 0.105 0.035 0.041 b 0.300 0.500 0.012 0.020 c 0.080 0.150 0.003 0.006 D 2.800 3.000 0.110 0.118 E 1.200 1.400 0.047 0.055 E1 2.250 2.550 0.089 0.100 e 0.950 BSC 0.037 BSC e1 1.800 2.000 0.071 0.079 L 0.300 0.500 0.012 0.020 θ 0° 8° 0° 8°

AiT Semiconductor Inc. www.ait-ic.com A431A_A432A SHUNT REGULATOR HIGH TEMPERATURE ADJUSTABLE PRECISION REV1.0 - JUL 2019 RELEASED - - 9 - IMPORTANT NOTICE AiT S emiconductor Inc. (AiT) reserves the right to make changes to any its product, specifications, to discontinue any integrated circuit product or service witho ut notice, and advises its customers to obtain the latest version of relevant information to verify , before placing orders , that the information being relied on is current. AiT Semiconductor Inc. 's integrated circuit products are not designed, intended, authorized, or warranted t o be suitable for use in life support applications, devices or systems or other critical applica tions. Use of AiT products in such applications is understood to be fully at the risk of the customer. As used herein may involve potential risks of death, p ersonal injury, or server property, or environmental damage. In order t o minimize risks associated with the customer's applications, the customer should provide adequate design and operating safeguards. AiT Semiconductor Inc . assumes to no liability to customer product design or application support. AiT warrants the performance of its products of the specifications applicable at the time of sale.