R

30

Ω

TL1431

2N2222

2N2222

0.01

µF

4.7 k

Ω

R1

0.1%

R2

0.1%

V

O +

1 )

R1

R2

V

I(ref)

In

Out

TL1431

Common

µA7805

R1

R2

V + 1 )

R1

R2

V

I(ref)

TL1431

R1

R2

C

V

trip +

1 )

R1

R2

V

I(ref)

TL1431

V

O +

1 )

R1

R2

V

I(ref)

R1

R2

R

LM317

In

Out

8.2 k

Ω

TL1431

Adjust

243

Ω

0.1%

243

Ω

0.1%

TL1431

27.4 k

Ω

0.1%

27.4 k

Ω

0.1%

TL1431

SLVS062M – DECEMBER 1991 – REVISED APRIL 2012

www.ti.com

Figure 21. Precision High-Current Series Regulator

Figure 22. Output Control of a Three-Terminal

Fixed Regulator

A.

Refer to the stability boundary conditions in Figure 18 to determine allowable values for C.

Figure 23. Higher-Current Shunt Regulator

Figure 24. Crowbar

A.

Figure 25. Precision 5-V, 1.5-A, 0.5% Regulator

Figure 26. 5-V Precision Regulator

10

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