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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
n
Ultra low Power
n
3.0V detection
n
V
IN Range: 0.8V to 7.0V
n
Open drain output
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Ultra-small SC70-5 package
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Extended Temperature range (40C to 85C)
n
Ultra Low Quiescent current (1A 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
n
Hand-held Instruments
Circuit Block Diagram
20020001
Typical Application
20020003
March 2001
LMS33460
3V
Under
V
oltage
Detector
2004 National Semiconductor Corporation
DS200200
www.national.com
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