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CM431ABCS Datasheet(PDF) 8 Page - Champion Microelectronic Corp.

Part No. CM431ABCS
Description  LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR
Download  14 Pages
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Maker  CHAMP [Champion Microelectronic Corp.]
Homepage  http://www.champion-micro.com
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CM431ABCS Datasheet(HTML) 8 Page - Champion Microelectronic Corp.

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CM431A
LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR
2006/10/11 Rev1.2
Champion Microelectronic Corporation
Page 8
APPLICATION INFORMATION
R*
V
V
VO = (1 + R1/R2) × VREF
Note: R should provide 1mA cathode current to the
CM431A of minimum VBATT
Figure 4. Shunt Regulator
V
BATT
O
BATT
R1
0.1%
CM431A
V
CM431A
O
VREF
V
≈ 2V
Input
on
R2
Voff ≈ VBATT
0.1%
Figure 5. Single –Supply Comparator With Temperature
compensated threshold.
VO = (1 + R1/R2) × VREF
Figure 6. High-Current Shunt Regulator
Figure 7. Crowbar Circuit
GND
Vth = 2.5V
V
V
V
V
BATT
O
BATT
O
R1
R1
CM431A
C
R2
CM431A
R2


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