AP431AQG-7

NOT RECOMMENDED FOR NEW DESIGN USE AS431 AP431/AP431A ADJUSTABLE PRECISION SHUNT REGULATOR Description Pin Assignments The AP431 and AP431A are 3-terminal adjustable precision shunt regulators with guaranteed temperature stability over the applicable extended commercial temperature range. The output voltage may be set at any level greater than 2.495V (VREF) up to 36V merely by selecting two external resistors that act as a voltage divider network. These devices have a typical output impedance of 0.2Ω. Active output circuitry provides very sharp turn-on characteristics, making these devices excellent improved replacements for Zener diodes in many applications. (1) SOT25 (2) SO-8 (Top View) NC 5 1 NC (Top View) ANODE 2 CATHODE 4 3 REF CATHODE 1 8 REF ANODE 2 7 ANODE ANODE 3 6 ANODE NC 4 5 NC (3) SC59 (4) SC59R (Top View) The precise (+/-) 1% reference voltage tolerance of AP431/AP431A make it possible in many applications to avoid the use of a variable resistor, consequently saving cost and eliminating drift and reliability problems associated with it. CATHODE 1 REF 2 (5) SOT23 Precision Reference Voltage AP431: 2.495V ± 1% AP431A: 2.495V ± 0.5% Sink Current Capability: 200mA Minimum Cathode Current for Regulation: 300μA Equivalent Full-Range Temp Coefficient: 30ppm/°C Fast Turn-On Response Low Dynamic Output Impedance: 0.2Ω Programmable Output Voltage to 36V Low Output Noise Lead Free Packages: SOT25, SC59, SC59R, SOT89 and SO-8  Totally Lead-Free; RoHS Compliant (Notes 1 & 2) • SOT23, SOT23R, SOT25, SC59, SC59R, SO-8, SOT89: Available in “Green” Molding Compound (No Br, Sb). See “Ordering Information”  Halogen and Antimony Free. “Green” Device (Note 3) 1 CATHODE 2 3 (Top View) REF 1 1 CATHODE ANODE (6) SOT23R (Top View) • • • • • • • • • • • REF 3 ANODE Features Notes: (Top View) the 3 ANODE 3 ANODE CATHODE 2 REF 2 (7) SOT89 (Top View) 1 2 3 REF Anode Cathode 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com 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