AP432

NOT RECOMMENDED FOR NEW DESIGN USE AZ431L AP432/AP432A ADJUSTABLE PRECISION SHUNT REGULATOR Description The AP432 and AP432A are 3-terminal adjustable precision shunt regulators with guaranteed stable temperature over the applicable extended commercial temperature range. The output voltage may be set at any level greater than 1.24V (VREF) up to 20V 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. The precise +/-1% reference voltage tolerance of the AP432/AP432A 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. Features Precision Reference Voltage  AP432 : 1.24V ± 1%  AP432A : 1.24V ± 0.5% Sink Current Capability: 200mA Minimum Cathode Current for Regulation: 150μA Equivalent Full-Range Temp Coefficient: 30 ppm/°C Fast Turn-On Response Low Dynamic Output Impedance: 0.2Ω Programmable Output Voltage to 20V Low Output Noise Lead Free packages: SOT25, SC59, SC59R and SOT89-3  Lead-Free Finish; RoHS Compliant (Notes 1 & 2) SOT23, SOT23R, SOT25, SC59, SC59R, SO-8 and SOT89: Available in “Green” Molding Compound (No Br, Sb)  Halogen and Antimony Free. “Green” Device (Note 3) Pin Assignments (...