ZR431LC02 データシートの表示（PDF） - Zetex => Diodes

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ZR431LC02

ADJUSTABLE PRECISION ZENER SHUNT REGULATOR

Zetex => Diodes 

ADJUSTABLE PRECISION

ZENER SHUNT REGULATOR

Issue 1 - NOVEMBER 1998

DEVICE DESCRIPTION

The ZR431L is a three terminal adjustable

shunt regulator offering excellent

temperature stability and output current

handling capability up to 25mA. The output

voltage may be set to any chosen voltage

between 1.24 and 10 volts by selection of

two external divider resistors.

The devices can be used as a replacement

for zener diodes in many applications

requiring an improvement in zener

performance.

The ZR431L is particularly used in the

feedback control loop of switch mode power

supplies. In this application the device 1.24

volt reference enables the generation of low

voltage supplies, typically 3.3 volts or 3 volts.

SCHEMATIC DIAGRAM

Vref

ZR431L

FEATURES

• Surface mount SOT23 package

• TO92 package

• 2.5% and 1% tolerance

• Maximum temperature coefficient 50

ppm/°C

• Temperature compensated for

operation over the full temperature

range

• Programmable output voltage

• 100µA to 25mA current sink capability

• Low output noise

APPLICATIONS

• Shunt regulator

• Series regulator

• Voltage monitor

• Over voltage/ under voltage protection

• Switch mode power supplies

VZ

Gnd

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