AP431SHAZTR-G1 Diodes Incorporated

AP431S LOW CATHODE CURRENT ADJUSTABLE PRECISION SHUNT REGULATOR Description Pin Assignments The AP431S is a 3-terminal adjustable shunt regulator with guaranteed thermal stability over a full operation range. It features (Top View) (Top View) sharp turn-on characteristics, low temperature coefficient and low ANODE ANODE output impedance, which makes it ideal substitute for Zener diode in 3 3 applications such as switching power supply, charger and other adjustable regulators. The AP431S has the same electrical specifications as the industry standard 431 except that it features a low minimum cathode current 1 2 1 2 for regulation. The typical value of 50A makes the parts ideal for CATHODE REF CATHODE REF very low power dissipation applications. SOT23 (Package Code: N) SOT23 (Package Code: N1) The output voltage of AP431S can be set to any value between V REF (2.5V/2.495V) and the corresponding maximum cathode voltage (Top View) (Top View) (36V). The AP431S is offered in two grade initial voltage tolerance at +25C, 0.5% and 1%. This IC is available in 3 packages: TO92 (ammo packing), SOT23 1 2 3 3 1 2 and SOT89. REF ANODE CATHODE REF ANODE CATHODE SOT89 (Option 1) SOT89 (Option 2) Features Low Minimum Cathode Current for Regulation: 50A (Typ.), (Top View) 100A (Max.) Programmable Precise Output Voltage from 2.5V/2.495V to 36V High Stability Under Capacitive Load Low Deviation of Reference Voltage Over Full Temperature Range: 11mV Typical (-40C to +125C) Sink Current Capacity from 100A to 100mA Low Dynamic Impedance: 0.1 (Typ.) Wide Operating Temperature Range: -40C to +125C Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) TO92 (Ammo Packing) Halogen and Antimony Free. Green Device (Note 3) Applications Charger Voltage Adapter Switching Power Supply Graphic Card Precision Voltage Reference Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See AP431S Typical Applications Circuit V =(1+R1/R2) x V OUT REF AP431S Shunt Regulator V =(1+R2/R3) x V OUT REF AP431S High Current Shunt Regulator I =V /R2+I OUT REF KA AP431S Current Source or Current Limit 2 of 17 AP431S January 2017 Diodes Incorporated www.diodes.com Document number: DS39195 Rev. 1 - 2 NEW PRODUCT