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IR3721 Datasheet(PDF) 3 Page - International Rectifier

Part # IR3721
Description  Power Monitor IC with
PDF  16 Pages
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Manufacturer  IRF [International Rectifier]
Direct Link  http://www.irf.com
Logo IRF - International Rectifier

IR3721 Datasheet(HTML) 3 Page - International Rectifier

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IR3721
DATA SHEET
Page 3 of 16
www.irf.com
09/15/08
BLOCK DIAGRAM
DI
VRT
VDD
IR3721
VK
VCS
VO
TruePower™
result out
VCS
IREF
IREF
result out/
VO
GND
IC PIN DESCRIPTION
NAME
NUMBER I/O LEVEL
DESCRIPTION
VCS
1
Analog
Current sensing input, connect through resistor to sensing node
VO
2
Analog
Current sensing reference connect to output voltage
VRT
3
Analog
RT thermistor network from this pin to GND programs thermal monitor
GND
4
Bias return and signal reference
VDD
5
3.3V
IC bias supply
GND
6
Connect to pin 4
GND
7
Connect to pin 4
DI
8
Analog
Power Monitor output; connect to output filter
VK
9
1.8V
Connect to fixed voltage or VO, multiplied by DI to become analog output
VDD
10
3.3V
Connect to pin 5
BASE PAD
Connect to pin 4



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