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CAT808 Datasheet(PDF) 1 Page - Catalyst Semiconductor

Part No. CAT808
Description  Low-Power Precision Voltage Detector
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Maker  CATALYST [Catalyst Semiconductor]
Homepage  http://www.catalyst-semiconductor.com
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CAT808 Datasheet(HTML) 1 Page - Catalyst Semiconductor

   
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CAT808
© 2006 Catalyst Semiconductor, Inc.
1
Doc. No. 3024 Rev. A
Characteristics subject to change without notice
GND
2
3
1
OUT
VDD
NC
GND
2
3
1
NC
5
4
OUT
VDD
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
APPLICATIONS
Battery-Powered Systems
Power Supply Monitoring
Handheld and Portable Equipment
Processor Supervisor Reset
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.
The CAT808 open-drain output is active low until the
VDD voltage exceeds the detection threshold. A low
hysteresis is built into the device to minimize output
“chatter”, while VDD passes through the detection
threshold, and the output transitions high.
After the CAT808 asserts the output high condition, it
continues to monitor VDD until it drops below the
detection threshold, when the output goes low until
VDD once again exceeds the detection threshold.
For Ordering Information details, see page 7.
PIN CONFIGURATION
TYPICAL APPLICATION
SOT-89
5-Lead Thin SOT-23
Note: The value of the pull-up resistor is not critical
OUT
SHDN
GND
IN
DC-DC
CONVERTER
OUT
VDD
GND
Battery
Voltage
CAT808
10kΩ


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