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CAT808NTFI-29T3

Description
low-power precision voltage detector
File Size190KB,8 Pages
ManufacturerCatalyst
Websitehttp://www.catalyst-semiconductor.com/
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CAT808NTFI-29T3 Overview

low-power precision voltage detector

CAT808
Low-Power Precision Voltage Detector
FEATURES
Ultra Low Current Consumption 2.4µA
Accurate Voltage Detection Threshold
Fine Voltage Detection Threshold Resolution
Active Low Open Drain Output
Available in 5-pin TSOT- 23 and 3-pin SOT- 89
RoHS compliant packages
Industrial temperature range -40°C to +85°C
The CAT808 open-drain output is active low until the
V
DD
voltage exceeds the detection threshold. A low
hysteresis is built into the device to minimize output
“chatter”, while V
DD
passes through the detection
threshold, and the output transitions high.
After the CAT808 asserts the output high condition, it
continues to monitor V
DD
until it drops below the
detection threshold, when the output goes low until
V
DD
once again exceeds the detection threshold.
DESCRIPTION
The CAT808 is a high-precision voltage detector
designed for monitoring single cell and multi-cell batteries.
Voltage detection thresholds between 2.0V and 3.2V are
provided with 0.1V resolution and ±3.0% accuracy.
APPLICATIONS
Battery-Powered Systems
Power Supply Monitoring
Handheld and Portable Equipment
Processor Supervisor Reset
For Ordering Information details, see page 7.
PIN CONFIGURATION
SOT-89
OUT 1
V
DD
2
GND 3
TYPICAL APPLICATION
5-Lead Thin SOT-23
V
DD
IN
CAT808
OUT
DC-DC
CONVERTER
SHDN
GND
OUT
OUT 1
V
DD
2
GND 3
5 NC
Battery
Voltage
10kΩ
4 NC
GND
Note:
The value of the pull-up resistor is not critical
© 2006 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
1
Doc. No. 3024 Rev. A

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