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431BCM - Adjustable Precision Zener Shunt Regulator

General Description

The LM431 is a 3-terminal adjustable shunt regulator with guaranteed temperature stability over the entire temperature range of operation.

It is now available in a chip sized package (4-Bump micro SMD) using National’s micro SMD package technology.

Key Features

  • n Average temperature coefficient 50 ppm/˚C n Temperature compensated for operation over the full temperature range n Programmable output voltage n Fast turn-on response n Low output noise n LM431 in micro SMD package Connection Diagrams TO-92: Plastic Package SOT-23: 3-Lead Small Outline DS010055-28 DS010055-1 Top View 4-Bump micro SMD Top View SO-8: 8-Pin Surface Mount DS010055-54 DS010055-2 Top view Top View (bump side down) © 1999 National Semiconductor Corporation DS010055 www. nat.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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LM431 Adjustable Precision Zener Shunt Regulator December 1999 LM431 Adjustable Precision Zener Shunt Regulator General Description The LM431 is a 3-terminal adjustable shunt regulator with guaranteed temperature stability over the entire temperature range of operation. It is now available in a chip sized package (4-Bump micro SMD) using National’s micro SMD package technology. 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.