PRODUCT NAME

ICF TL431A

FUNCTIONAL DESCRIPTION

Adjustable Precision Shunt Regulator

APPLICATIONS

Digital voltmeter

Operational amplifier

Adjustable power supply

Switching power supply

GENERAL DESCRIPTION

The TL431A is a 3-terminal adjustable shunt regulator with guaranteed temperature stability over the entire temperature range of operation. The output voltage may be set at any level greater than 2.5V (VREF) up to 36V merely by selecting two external resistors that act as a voltage divided network. Due to the sharp turn-on characteristics this device is an excellent replacement for many zener diode applications.

FEATURES

Average temperature coefficient 50 ppm/°C

Temperature compensated for operation over the full temperature range

Programmable output voltage

Fast turn-on response

Low output noise

BLOCK DIAGRAM

ORDERING INFORMATION