TL431 View Datasheet(PDF) - Motorola => Freescale

Part Name

Description

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TL431

Programmable Precision References

Motorola => Freescale 

TL431, A, B Series

Figure 20. Output Control for a

Three–Terminal Fixed Regulator

MC7805

V+

In

Out

Common

Vout

R1

Figure 21. Series Pass Regulator

V+

Vout

R1

R2

ǒ Ǔ + ) Vout

1

R1

R2

Vref

+ ) Vout min Vref 5.0V

R2

ǒ Ǔ + ) Vout

1

R1

R2

Vref

+ ) Vout min Vref Vbe

Figure 22. Constant Current Source

V+

RCL

Iout

+ Iout

Vref

RCL

Figure 23. Constant Current Sink

V+

Isink

+ ISink

Vref

RS

RS

Figure 24. TRIAC Crowbar

V+

Vout

R1

R2

ǒ Ǔ + ) Vout(trip)

1

R1

R2

Vref

Figure 25. SRC Crowbar

V+

Vout

R1

R2

ǒ Ǔ + ) Vout(trip)

1

R1

R2

Vref

8

MOTOROLA ANALOG IC DEVICE DATA

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