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Typical Application
Fig 4. Shunt Regulator
Fig 5. High Current Shunt Regulator
Vcc
Vout
Vcc
Vout
R1
R2
R1
R2
Vout=(1+R1/R2)VREF
Vout=(1+R1/R2)VREF
Fig 6. Output Control of a Three-Terminal Fixed
Regulator
Fig 7. Series Pass Regulator
Vcc
Vout
AX7805
IN
OUT
Vcc
Vout
R1
R2
COMMON
R1
R2
Vout=(1+R1/R2)VREF; Vout(min)=VREF+5V
Fig 8. Current Limiter or Current Source
Vout=(1+R1/R2)VREF; Vout(min)=VREF+VBE
Fig 9. Constant Current Sink
Vcc
Isink
Vcc
Iout
RCL
Rs
Iout=VREF/RCL
Isink=VREF/RS
DS-RS431L-01 October, 2006
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