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| CM431A Datasheet, PDF (8/14 Pages) List of Unclassifed Manufacturers – LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR | |||
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CM431A
LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR
APPLICATION INFORMATION
VBATT
R*
R1
0.1%
VREF
R2
0.1%
VO
CM431A
VO = (1 + R1/R2) Ã VREF
Note: R should provide 1mA cathode current to the
CM431A of minimum VBATT
Figure 4. Shunt Regulator
VBATT
Input
CM431A
Vth = 2.5V
VO
Von â 2V
Voff â VBATT
GND
Figure 5. Single âSupply Comparator With Temperature
compensated threshold.
VBATT
VO
VBATT
R1
R1
R2 CM431A
R2
VO
CM431A
C
VO = (1 + R1/R2) Ã VREF
Figure 6. High-Current Shunt Regulator
Figure 7. Crowbar Circuit
2004/08/27
Champion Microelectronic Corporation
Page 8
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