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AMC DOC. #: AMC431_C
AMC431
November
2002
PRECISION ADJUSTABLE SHUNT
VOLTAGE REGULATORS
Copyright
2002, ADD Microtech Corp.
7
www.addmtek.com
APPLICATION INFORMATION (continued)
Figure 8.Precision 5V, 1.5A Regulator
Figure 9. Precision Constant Current Sink
VO = (1 + R1/R2)
×××× V
REF
Min VO = VREF + 5V
Figure 10. Output Control of a Three-Terminal
Fixed Regulator
IOUT = (VREF/RCL) + IKA
R1 = VBATT/((IO/hFE) + IKA)
Figure 11. Precision Current Limiter
AMC431
AMC317
8.2K
Ω
243
Ω
0.1%
VBATT
VO = 5V/1.5A
243
Ω
0.1%
Adjust
AMC431
VBATT
RS
0.1%
IO =
VREF/RS
AMC431
VBATT
AMC78L05
R2
R1
OUT
IN
Common
VO
VBATT
AMC431
RCL
0.1%
IO
R1