LM8364 Micropower Undervoltage Sensing Circuits
March 2003
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 0.65碌A 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: 0.65碌A, at V
IN
=
2.87V
n
High Accuracy Threshold Voltage (
鹵
2.5%)
n
Open Drain Output
n
Input Voltage Range: 1V to 6V
n
Surface Mount Package (5-Pin SOT23)
n
Pin for pin compatible with MC33464
Applications
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n
n
n
Low Battery Detection
Microprocessor reset Controller
Power Fail Indicator
Battery Backup Detection
Functional Block Diagram
Connection Diagram
5-Pin SOT23
20065906
Top View
20065907
漏 2003 National Semiconductor Corporation
DS200659
www.national.com