9.1 Overview

The TL1431-EP is a precision-programmable reference with specified thermal stability over the military temperature range. The device can be used in a very wide array of applications, and can enter operational mode with as little as two external resistors.

9.2 Functional Block Diagram

9.3 Feature Description

The output voltage can be set to any value between V_I(ref) and 36 V. Active output circuitry provides a very sharp turnon characteristic, making the device an excellent replacement for Zener diodes and other types of references in applications such as onboard regulation, adjustable power supplies, and switching power supplies.

TI's EP line is certified to the Aerospace Qualified Electronic Component (AQEC) Standard (ANSI/GEIA STD-0002-1). The AQEC Standard was jointly developed by the aerospace and semiconductor industries to define the minimum requirements for commercial-off-the-shelf (COTS) components used in military, avionic, aerospace, medical and other rugged operating environments where high-reliability and long service life are required.

9.4 Device Functional Modes

The device only has one functional mode, which is enabled at power up. Operation of the device is determined by external parameters described Application and Implementation.