LM8364

Micropower Undervoltage Sensing Circuits

General Description

The LM8364 series are micropower undervoltage sensing

circuits that are ideal for use in battery powered micropro-

cessor based systems, where extended battery life is a key

requirement.

A range of threshold voltages from 2.0V to 4.5V are available

with an active low open drain output. These devices feature

a very low quiescent current of 0.65µA typical. The LM8364

series features a highly accurate voltage reference, a com-

parator with precise thresholds and built-in hysterisis to pre-

vent erratic reset operation, and guaranteed Reset operation

down to 1.0V with extremely low standby current.

These devices are available in the space saving SOT23

5-pin surface mount package. For other undervoltage

thresholds and output options, please contact National

Semiconductor.

Features

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Extremely Low Quiescent Current: 0.65µA, at V

2.87V

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Open Drain Output

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Input Voltage Range: 1V to 6V

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Surface Mount Package (5-Pin SOT23)

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Pin for pin compatible with MC33464

Applications

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Low Battery Detection

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Microprocessor reset Controller

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Power Fail Indicator

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Battery Backup Detection

Functional Block Diagram

20065907

Connection Diagram

5-Pin SOT23

20065906

Top View

March 2003

© 2003 National Semiconductor Corporation

DS200659

www.national.com