LMS33460

3V Under Voltage Detector

General Description

The LMS33460 is an under voltage detector with a 3.0V

threshold and extremely low power consumption. The

LMS33460 is specifically designed to accurately monitor

power supplies. It is especially suited to battery powered

systems where low quiescent current and small size are

required. This IC generates an active output whenever the

input voltage drops below 3.0 Volts.

This part uses a precision on-chip voltage reference and a

comparator to measure the input voltage. Built in hysteresis

helps to prevent erratic operation in the presence of noise.

The UVD is available in the ultra-miniature SC70-5 package.

Features

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Ultra low Power

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3.0V detection

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V

n

Open drain output

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Ultra-small SC70-5 package

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Extended Temperature range (−40˚C to 85˚C)

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Ultra Low Quiescent current (1µA typ)

Applications

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Low battery voltage detector

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Power Fail Indicator

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Processor Reset Generator

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Battery Backup Control

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Battery Operated Equipment

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Hand-held Instruments

Circuit Block Diagram

20020001

Typical Application

20020003

March 2001

© 2004 National Semiconductor Corporation

DS200200

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