LM317L

SEMICONDUCTOR

TECHNICAL DATA

LOW CURRENT

THREE–TERMINAL

ADJUSTABLE POSITIVE

VOLTAGE REGULATOR

ORDERING INFORMATION

Order this document by LM317L/D

Z SUFFIX

PLASTIC PACKAGE

CASE 29

Pin 1. Adjust

2. Vout

3. Vin

3

1

2

D SUFFIX

PLASTIC PACKAGE

CASE 751

(SOP–8*)

1

8

Pin 1. Vin

2. Vout

3. Vout

4. Adjust

5. N.C.

6. Vout

7. Vout

8. N.C.

* SOP–8 is an internally modified SO–8 pack-

age. Pins 2, 3, 6 and 7 are electrically common

to the die attach flag. This internal lead frame

modification decreases package thermal resis-

tance and increases power dissipation capabili-

ty when appropriately mounted on a printed cir-

cuit board. SOP–8 conforms to all external di-

mensions of the standard SO–8 package.

Operating

Temperature Range

Device

Package

LM317LD

LM317LZ

LM317LBZ

SOP–8

Plastic

Plastic

TJ = –40° to +125°C

TJ = 0° to +125°C

LM317LBD

SOP–8

LM317L

SEMICONDUCTOR

TECHNICAL DATA

LOW CURRENT

THREE–TERMINAL

ADJUSTABLE POSITIVE

VOLTAGE REGULATOR

ORDERING INFORMATION

Order this document by LM317L/D

Z SUFFIX

PLASTIC PACKAGE

CASE 29

Pin 1. Adjust

2. Vout

3. Vin

3

1

2

D SUFFIX

PLASTIC PACKAGE

CASE 751

(SOP–8*)

1

8

Pin 1. Vin

2. Vout

3. Vout

4. Adjust

5. N.C.

6. Vout

7. Vout

8. N.C.

* SOP–8 is an internally modified SO–8 pack-

age. Pins 2, 3, 6 and 7 are electrically common

to the die attach flag. This internal lead frame

modification decreases package thermal resis-

tance and increases power dissipation capabili-

ty when appropriately mounted on a printed cir-

cuit board. SOP–8 conforms to all external di-

mensions of the standard SO–8 package.

Operating

Temperature Range

Device

Package

LM317LD

LM317LZ

LM317LBZ

SOP–8

Plastic

Plastic

TJ = –40° to +125°C

TJ = 0° to +125°C

LM317LBD

SOP–8

1

MOTOROLA ANALOG IC DEVICE DATA

Three-Terminal Adjustable

Output Positive Voltage

Regulator

The LM317L is an adjustable 3–terminal positive voltage regulator

capable of supplying in excess of 100 mA over an output voltage range of

1.2 V to 37 V. This voltage regulator is exceptionally easy to use and

requires only two external resistors to set the output voltage. Further, it

employs internal current limiting, thermal shutdown and safe area

compensation, making them essentially blow–out proof.

The LM317L serves a wide variety of applications including local, on card

regulation. This device can also be used to make a programmable output

regulator, or by connecting a fixed resistor between the adjustment and

output, the LM317L can be used as a precision current regulator.

Simplified Application

* Cin is required if regulator is located an appreciable

** CO is not needed for stability, however,

Since IAdj is controlled to less than 100 µA, the error

associated with this term is negligible in most applications.

LM317L

Vin

Vout

R1

240

R2

Adjust

IAdj

Cin*

0.1

µF

+ CO**

1.0

µF

Vout + 1.25 V 1 )

R2

R1

) IAdj R2

© Motorola, Inc. 1996

Rev 1