(see Note A)

R2 = 3 k

Ω

1N4002

R3 =

820

Ω

−10 V

C1 = 0.1

µF

35 V

Adjustment

Output

Input

LM317L

NOTE A: Output voltage is calculated from the equation:

and ADJUSTMENT voltages (

≈1.25 V).

R1 = 120

Ω

V

R2 ) R3

R1

* 10 V

C1 = 0.1

µF

(see Note A)

470

Ω

R1

R2

C2 = 1

µF

(see Note C)

(see Note B)

Adjustment

Output

Input

LM317L

NOTES: A. Use of an input bypass capacitor is recommended if

regulator is far from the filter capacitors.

B. Output voltage is calculated from the equation:

ADJUSTMENT voltages (

≈1.25 V).

C. Use of an output capacitor improves transient response,

but is optional.

V

R2

R1

R1

Adjustment

Output

Input

LM317L

I

1.25

R1

R1 =

470

Ω

1N4002

C3 = 1

µF

C2 = 10

µF

R2 =

10 k

Ω

+

+

−

−

Adjustment

Output

Input

LM317L

NOTE A: Use of an output capacitor improves transient response, but is

optional.

(see Note A)

C1 =

0.1

µF

R3 =

240

Ω

C1 = 0.1

µF

C2 = 1

µF

Output

Adjust

R2 = 1.5 k

Ω

R1 = 470

Ω

LM317L

R4 =

2 k

Ω

Adjustment

Output

Input

LM317L

Adjustment

Output

Input

R1 =

470

Ω

R2 = 5.1 k

Ω

C1 = 25

µF

2N2905

R3 = 50 k

Ω

1N4002

LM317L

Adjustment

Output

Input

LM317L

SLCS144D

– JULY 2004 – REVISED OCTOBER 2011

www.ti.com

APPLICATION INFORMATION

Figure 1. Adjustable Voltage Regulator

Figure 2. 0-V to 30-V Regulator Circuit

Figure 3. Regulator Circuit With Improved Ripple

Figure 4. Precision Current-Limiter Circuit

Rejection

Figure 5. Tracking Preregulator Circuit

Figure 6. Slow-Turnon 15-V Regulator Circuit

4

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Product Folder Link(s): LM317L