AP431IAZTR-G1

NOT RECOMMENDED FOR NEW DESIGN USE AP431S AP431i LOW CATHODE CURRENT ADJUSTABLE PRECISION SHUNT REGULATOR Description Pin Assignments The AP431i is a 3-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 makes it ideal substitute for Zener diode in applications such as switching power supply, charger and other adjustable regulators. The AP431i has the same electrical specifications as the industry standard 431 except that it features a low minimum cathode current for regulation. The typical value of 50μA makes the parts ideal for very low power dissipation applications. (Top View) (Top View) ANODE ANODE 3 3 1 2 1 2 REF CATHODE CATHODE REF SOT-23 (Package Code: N) SOT-23 (Package Code: N1) (Top View) (Top View) The output voltage of AP431i can be set to any value between VREF (2.5V/2.495V) and the corresponding maximum cathode voltage (36V). The AP431i is offered in two grade initial voltage tolerance at +25°C, 0.5% and 1%. This IC is available in 3 packages: TO-92 (ammo packing), SOT-23 and SOT-89. 1 2 3 REF ANODE CATHODE Features SOT-89 (Option 1)  Low Minimum Cathode Current for Regulation: 50μA (Typ.), 100μA (Max.)    Programmable Precise Output Voltage from 2.5V/2.495V to 36V    Sink Current Capacity from 100µA to 100mA  Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)  Halogen and Antimony Free. “Green” Device (Note 3) 1 2 3 REF ANODE CATHODE SOT-89 (Option 2) (Top View) High Stability Under Capacitive Load Low Deviation of Reference Voltage Over Full Temperature Range: 11mV Typical (-40C to +125°C) Low Dynamic Impedance: 0.1Ω (Typ.) Wide Operating Temperature Range: -40°C to +125°C TO-92 (Ammo Packing) Applications      Notes: Charger Voltage Adapter Switching Power Supply Graphic Card Precision Voltage Reference 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html 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