TL430_15 Datasheet, PDF (5/9 Pages) Texas Instruments – ADJUSTABLE SHUNT REGULATORS

TL430
ADJUSTABLE SHUNT REGULATORS
SLVS050D − JUNE 1976 − REVISED JANUARY 2005
APPLICATION INFORMATION
RCL
V+
IO
V+
µA7805 Regulator
IN
OUT
GND
VO
R1
R2
VI(ref)
IO [ _RCL
Figure 7. Current Limiter
V+
VO
R1
ǒ Ǔ _{VO +}
1
)
R1
R2
VI(ref)
Min VO + VI(ref) ) 5 V
Figure 8. Output Control of a 3-Terminal
Fixed Regulator
V+
VO
R1
R2
ǒ Ǔ _{VO [}
1
)
R1
R2
VI(ref)
Figure 9. Higher-Current Applications
VCC
R1A
R1B
R2A
R2B
R2
Q1
ǒ Ǔ ǒ Ǔ _{Vlimit [}
1
)
R1
R2
VI(ref) ) VBE(Q1)
Figure 10. Crowbar
ǒ Ǔ _{Low limit}
[ VI(ref)
1
)
R1B
R2B
) VD
ǒ Ǔ _{High limit [}
VI(ref)
1
)
R1A
R2A
Figure 11. V_CC Monitor
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