A431 AITSEMI | Alldatasheet
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AiT Semiconductor Inc. www.ait-ic.com A431 SHUNT REGULATOR ADJUSTABLE PRECISION REV2.4 - JAN 2012 RELEASED, JUN 2019 UPDATED - - 1 - DESCRIPTION FEATURES The A431 is available in SOT-23, SOT89-3 and TO-92 packages. ⚫ Programmable output Voltage to 36V ⚫ Low dynamic output impedance ⚫ Sink current capability of 1 to 100mA ⚫ Low output noise voltage ⚫ Fast turn on response ⚫ Available in SOT-23, SOT89-3 and TO -92 packages. ORDERING INFORMATION TYPICAL APPLICATION Package Type Part Number SOT-23 SPQ: 3,000pcs/Reel A431E3R-X A431E3VR-X SOT89-3 SPQ: 1,000pcs/Reel K3 A431K3R-X A431K3VR-X TO-92 A: SPQ: 2,000pcs/Box B: SPQ: 1,000pcs/Bag Z A431ZY-X A431ZVY-X Note X: Output Voltage Tolerance: A or B A=0.5%, B=1% R: Tape & Reel Y: Ammo or Bulk A=Ammo Packing B=Bulk Packing V: Halogen free Package AiT provides all RoHS products VKA=VREF x (1+R1/R2)+IREF x R1
AiT Semiconductor Inc. www.ait-ic.com A431 SHUNT REGULATOR ADJUSTABLE PRECISION REV2.4 - JAN 2012 RELEASED, JUN 2019 UPDATED - - 2 - PIN DESCRIPTION Top View Top View Top View Pin # Symbol Function SOT-23 SOT-89 TO-92 1 1 1 R REFERENCE 2 3 3 K CATHODE 3 2 2 A ANODE
AiT Semiconductor Inc. www.ait-ic.com A431 SHUNT REGULATOR ADJUSTABLE PRECISION REV2.4 - JAN 2012 RELEASED, JUN 2019 UPDATED - - 3 - ABSOLUTE MAXIMUM RATINGS TA = 25℃, unless otherwise noted. VKA, Cathode Voltage SOT-23, SOT89-3 37V TO-92 36V IKA, Cathode Current Range (Continuous) -100mA~+150mA IREF, Reference Input Current Range -0.05mA~+10mA PD, Power Dissipation SOT-23 350mW SOT89-3 500mW TO-92 770mW RθJA, Thermal Resistance from Junction to Ambient SOT89-3 250℃/W TO-92 162℃/W TOPR, Operating Temperature Range -25℃~+85℃ TJ, Junction Temperature 150℃ TSTG, Storage Temperature Range -65℃~ +150℃ 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 1 - 100 mA
AiT Semiconductor Inc. www.ait-ic.com A431 SHUNT REGULATOR ADJUSTABLE PRECISION REV2.4 - JAN 2012 RELEASED, JUN 2019 UPDATED - - 4 -
ELECTRICAL CHARACTERISTICS
TA=25℃ 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 -25℃ ≤ TA ≤ +85℃ - 4.5 17 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=∞ -25℃ ≤ TA ≤ +85℃ - 0.4 1.2 μA Minimum Cathode Current for Regulation IKA(MIN) VKA=VREF - 0.45 1.0 mA Off-Stage Cathode Current IKA(OFF) VKA=36V, VREF=0V - 0.05 1.0 μA Dynamic Impedance ZKA VKA=VREF,IKA=1 to 100mA, f≤1kHz - 0.15 0.5 Ω
AiT Semiconductor Inc. www.ait-ic.com A431 SHUNT REGULATOR ADJUSTABLE PRECISION REV2.4 - JAN 2012 RELEASED, JUN 2019 UPDATED - - 5 - TYPICAL PERFORMANCE CHARACTERISTICS 1. Cathode Current vs. Cathode Voltage 2. Cathode Current 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 A431 SHUNT REGULATOR ADJUSTABLE PRECISION REV2.4 - JAN 2012 RELEASED, JUN 2019 UPDATED - - 6 -
PACKAGE INFORMATION
Dimension in SOT-23 Package (Unit: mm) UNIT A B bp C D E HE A1 Lp mm 1.40 0.95 2.04 1.78 0.50 0.35 0.19 0.08 3.10 2.70 1.65 1.20 3.00 2.20 0.100 0.013 0.50 0.20
AiT Semiconductor Inc. www.ait-ic.com A431 SHUNT REGULATOR ADJUSTABLE PRECISION REV2.4 - JAN 2012 RELEASED, JUN 2019 UPDATED - - 7 - Dimension in SOT89-3 Package (Unit: mm)
AiT Semiconductor Inc. www.ait-ic.com A431 SHUNT REGULATOR ADJUSTABLE PRECISION REV2.4 - JAN 2012 RELEASED, JUN 2019 UPDATED - - 8 - Dimension in TO-92 (Unit: mm) Symbol Millimeters Inches Min Max Min Max A 3.300 3.700 0.130 0.146 A1 1.100 1.400 0.043 0.055 b 0.380 0.550 0.015 0.022 c 0.360 0.510 0.014 0.020 D 4.300 4.700 0.169 0.185 D1 3.430 - 0.135 - E 4.300 4.700 0.169 0.185 e 1.270 TYP 0.050 TYP e1 2.440 2.640 0.096 0.104 L 14.100 14.500 0.555 0.571 Φ - 1.600 - 0.063 h 0.000 0.380 0.000 0.015
AiT Semiconductor Inc. www.ait-ic.com A431 SHUNT REGULATOR ADJUSTABLE PRECISION REV2.4 - JAN 2012 RELEASED, JUN 2019 UPDATED - - 9 - IMPORTANT NOTICE AiT Semiconductor Inc. (AiT) reserves the right to make changes to any its product, specifications, to discontinue any integrated circuit product or service without 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 applications. 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 to 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.