AS431ARTR-G1

AS431 ADJUSTABLE PRECISION SHUNT REGULATORS Description Pin Assignments The AS431 is a three-terminal adjustable shunt regulator with guaranteed thermal stability over a full operation range. It features sharp turn-on characteristics, low temperature coefficient and low output impedance, which make it ideal substitute for Zener diode in applications such as switching power supply, charger and other adjustable regulators. (Top View) (Top View) ANODE 3 NC 1 * 2 CATHODE 3 (Note 4) The output voltage of AS431 can be set to any value between VREF (2.5V) and the corresponding maximum cathode voltage (36V). 1 2 REF The AS431 precision reference is offered in two voltage tolerance: 0.5% and 1.0%. This IC is available in 4 packages: TO92 (Ammo Packing), SOT23, SOT25 and SOT89. 5 ANODE 4 REF CATHODE SOT23 SOT25 Note 4: * Pin 2 is attached to substrate and must be connected to ANODE or open. (Top View) (Top View) Features  Programmable Precise Output Voltage from 2.5V to 36V  High Stability under Capacitive Load  Low Temperature Deviation: 4.5mV Typical  Low Equivalent Full-range 20PPM/°C Typical  Sink Current Capacity from 1mA to 100mA  Low Output Noise  Wide Operating Range of -40 to +125°C  Lead-Free Packages: SOT23, SOT25, TO92 (Ammo Packing), SOT89   Temperature Coefficient with 1 REF  Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)  Halogen and Antimony Free. “Green” Device (Note 3) Charger  Voltage Adapter  Switching Power Supply  Graphic Card  Precision Voltage Reference Notes: ANODE CATHODE 1 REF 2 3 ANODE CATHODE SOT89 (Option 2) (Top View) Lead-Free Packages, Available in “Green” Molding Compound: SOT23, SOT25, TO92 (Ammo Packing), SOT89  3 SOT89 (Option 1) Totally Lead-Free; RoHS Compliant (Notes 1 & 2) Applications 2 3 CATHODE 2 ANODE 1 REF TO92 (Ammo Packing) 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant. 2. See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain