ZR431ADJUSTABLE PRECISION ZENER SHUNT REGULATORDescriptionPin Assignments The ZR431 is a three terminal adjustable shunt regulator (Top View) offering excellent temperature stability and output current (Top View) handling capability up to 100mA. The output voltage may be
V 1 V 3 Z set to any chosen voltage between 2.5 and 20 volts by REF
selection of two external divider resistors. GND 2 4 GND 1 GND
The devices can be used as a replacement for zener diodes
V N REF 3 in many applications requiring an improvement in zener VZ 2 O performance. SOT223 SOT23
Pin 4 floating or ATI connected to pin 2 FeaturesRM • O Surface mount SOT223 and SOT23 packages F • 2%, 1 % and 0.5% tolerance N • Applications Max. temperature coefficient 55 ppm/°C • Temperature compensated for operation • Shunt regulator CE I • over the full temperature range • Series regulator • Programmable output voltage • Voltage monitor • 50μA to 100mA current sink capability • Over voltage/ under voltage protection • Low output noise • Switch mode power supplies ADVAN • All package options available in “Green” Molding
Compound (No Br, Sb) and Lead Free Finish/ RoHS Compliant (Note 1) Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/products/lead_free.html. Typical Application Circuit VZ V REF + GND