DEVICE DESCRIPTION

The ZHT431 is a three terminal adjustable shunt regulator offering excellent temperature stability and output current handling capability up to 100mA. The device offers extended operating temperature range working from -55 to +125°C. The output voltage may be set to any chosen voltage between 2.5 and 20 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.

FEATURES

• Surface mount SO8, SOT89, SOT223 and SOT23 packages

• TO92 package

• 2 and 1 tolerance

• Maximum temperature coefficient 67 ppm/°C

• Temperature compensated for operation over the full temperature range

• Programmable output voltage

• 50µA to 100mA current sink capability

• Low output noise

• Wide temperature range -55 to +125°C

APPLICATIONS

• Series and Shunt regulator

• Voltage monitor

• Over voltage/ under voltage protection

• Switch mode power supplies