STC431 Datasheet, PDF (4/5 Pages) Suntac Electronic Corp. – Programmable Voltage Reference

STC 431
LINEAR INTEGRATED CIRCUIT
APPLICATION CIRCUIT
Vi
Vo
Vi
Vo
Vi
IN
OUT
Vo
LM7805
COMMON
R1
R1
R1
VREF
R2
STC 431
Vo=(1+R1/R2)*VREF
STC 431
VREF
R2
Vo=(1+R1/R2)*VREF
VREF
R2
STC 431
Vo=(1+R1/R2)*VREF
Fig 7 Shutdown Regulator

Fig 8 Output Control of a Three
-Terminal Fixed Regulator
Fig 9 Higher-current Shunt Regulator
Vi
Io _Vo
Vi
Io
Vo
RCL
Rs
STC 431
Rs
IO=VREF/RS
Fig 1 0 Constant-current Sink
STC 431
RS=VREF/RCL
Fig 11 Current Limiting or Current Source
TEST CIRCUIT
INPUT
VKA
IKA
VREF
STC 431
Fig 12 Test Circuit For VKA=VREF
INPUT
R1
IREF
R2 ^VREF
VKA
IKA
STC 431
INPUT
VKA
IKA(OFF)
STC 431
VKA=VREF*(1+R1/R2)+IREF*R1
Fig 1 3 Test Circuit for VKA >= VREF
Fig 14Test Circuit For IKA(OFF)
4.