d

Linear Voltage Regulator – LM317A

Rev 1.0

03/03/18

Pad Layout and Functions

COORDINATES (mm)

PAD

FUNCTION

X

Y

1

VOUT

Typical Application

VOUT

LM317A

CI

0.1µf

CO

1µf

VIN

CI is required if the regulator is located an appreciable distance from power supply filter. CO is not required

for stability; however it does improve transient response. For optimum stability and transient response locate

CI CO as close as possible to the regulator.

ADJ

1630µm (64.17 mils)

1

9

8

7

6

5

3

0.073

1.637

2

ADJ

0.073

0.073

3

VOUT

1.400

0.331

4

VIN (x2 wire)

0.773

0.714

4

5

VOUT

1.400

1.402

6

NC

0.641

1.715

DIE ID

7

NC

0.512

1.715

8

NC

0.383

1.715

9

NC

0.254

1.715

2

NC = NO CONNECT

CONNECT CHIP BACK TO VOUT

0,0

R1

R2

1.2V–25V Adjustable Regulator

VOUT = 1.25V (1 +

+ IADJ * R2

R2

R1

IADJ tolerance <100µA

)

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