LM431ACMXNOPB National Semiconductor, LM431ACMXNOPB Datasheet

LM431ACMXNOPB

Manufacturer Part Number

LM431ACMXNOPB

Description

SOP8

Manufacturer

National Semiconductor

Datasheet

1.LM431BIM3.pdf (13 pages)

Specifications of LM431ACMXNOPB

Date_code

09+

Current page: 1 of 13
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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 pack-

age (4-Bump micro SMD) using National’s micro SMD pack-

age technology. The output voltage may be set at any level

greater than 2.5V (V

external resistors that act as a voltage divided network. Due

to the sharp turn-on characteristics this device is an excel-

lent replacement for many zener diode applications.

Connection Diagrams

Note: *NC = Not internally connected. Must be electrically isolated from the rest of the circuit for the microSMD package.

SO-8: 8-Pin Surface Mount

TO-92: Plastic Package

REF

) up to 36V merely by selecting two

Top View

Top view

DS010055

01005501

01005502

Features

n Average temperature coefficient 50 ppm/˚C

n Temperature compensated for operation over the full

n Programmable output voltage

n Fast turn-on response

n Low output noise

n LM431 in micro SMD package

n See AN-1112 for micro SMD considerations

temperature range

SOT-23: 3-Lead Small Outline

4-Bump micro SMD

(bump side down)

Top View

01005528

01005554

www.national.com

March 2005

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