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317B

1.5 A Adjustable Output, Positive Voltage Regulator

ON Semiconductor 

LM317

Representative Schematic Diagram

31

310

230 120

5.6k

0

125k

12.4k

135

170

6.7k

12k

160

5.0pF

200

6.8k 510

Vin

6.3V

13k

6.3V

6.3V

190

3.6k 5.8k 110 5.1k

30

30

pF

pF 2.4k

12.5k

This device contains 29 active transistors.

105

4.0

0.1

Vout

Adjust

VCC

*

VIH

VIL

Vin

*ĂPulse testing required.

*Ă1% Duty Cycle

*Ăis suggested.

Cin

0.1 µF

LM317

LineĂRegulationĂ(%ńV)Ă

+Ă

|VOHćVOL|

|VOL|

xĂ100

Vout

Adjust

IAdj

R1

240

1% CO

+

1.0 µF

R2

1%

Figure 1. Line Regulation and ∆IAdj/Line Test Circuit

VOH

VOL

RL

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