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  • The LM217, LM317 are monolithic integrated circuits in TO-220, TO-220FP and D²PAK packages intended for use as positive adjustable voltage regulators.

    They are designed to supply more than 1.5 A of load current with an output voltage adjustable over a 1.2 to 37 V range.
    The nominal output voltage is selected by means of a resistive divider, making the device exceptionally easy to use and eliminating the stocking of many fixed regulators.

    Key Features

    • Output voltage range: 1.2 to 37 V
    • Output current in excess of 1.5 A
    • 0.1% line and load regulation
    • Floating operation for high voltages
    • Complete series of protections: current limiting, thermal shutdown and SOA control

Recommended for you

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS0433
      1.2 V to 37 V adjustable voltage regulators
      21.0
      988.2 KB
      PDF
      DS0433

      1.2 V to 37 V adjustable voltage regulators

Publications and Collaterals

    • Description Version Size Action
      Linear and Switching Voltage Regulators Selection Guide 3.0
      370.88 KB
      PDF

      Linear and Switching Voltage Regulators Selection Guide

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
LM317BT
Active
TO-220 Industrial Ecopack2
LM317D2T-TR
Active
D2PAK Industrial Ecopack2
LM317P
Active
TO-220FP Industrial Ecopack2
LM317T
Active
TO-220 Industrial Ecopack2
LM317T-DG
Active
TO-220 Industrial Ecopack1

LM317BT

Package:

TO-220

Material Declaration**:

PDF XML

Marketing Status

Active

Package

TO-220

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LM317D2T-TR

Package:

D2PAK

Material Declaration**:

PDF XML

Marketing Status

Active

Package

D2PAK

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LM317P

Package:

TO-220FP

Material Declaration**:

PDF XML

Marketing Status

Active

Package

TO-220FP

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LM317T

Package:

TO-220

Material Declaration**:

PDF XML

Marketing Status

Active

Package

TO-220

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LM317T-DG

Package:

TO-220

Material Declaration**:

PDF XML

Marketing Status

Active

Package

TO-220

Grade

Industrial

RoHS Compliance Grade

Ecopack1

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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LM317D2T-TR Available at 10 distributors

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DIGIKEY WORLDWIDE 7512 1 Order Now
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EAR99 NEC Tape And Reel D2PAK 0 125 CHINA 0.32 / 1k
LM317BT Available at 5 distributors

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DIGIKEY WORLDWIDE 830 1 Order Now
RS COMPONENTS EUROPE 700 10 Order Now
ARROW EUROPE 2160 0 Order Now
MOUSER WORLDWIDE 2439 1 Order Now
Farnell Element14 EUROPE 910 1 Order Now

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DIGIKEY

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830

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1

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700

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10

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2160

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2439

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1

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910

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1

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EAR99 NEC Tube TO-220 -40 125 CHINA 0.23 / 1k
LM317T-DG Available at 11 distributors

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DIGIKEY WORLDWIDE 3458 1 Order Now
COMPEL EUROPE 932 1 Order Now
RS COMPONENTS EUROPE 525 25 Order Now
AVNET AMERICA 45906 0 Order Now
FUTURE WORLDWIDE 1658 1 Order Now
ARROW EUROPE 7790 0 Order Now
Newark Element14 AMERICA 84 0 Order Now
ARROW AMERICA 38617 1000 Order Now
MOUSER WORLDWIDE 3504 1 Order Now
Farnell Element14 EUROPE 697 1 Order Now
RUTRONIK EUROPE 4000 50 Order Now

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DIGIKEY

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3458

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1

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932

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525

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25

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45906

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0

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1658

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7790

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84

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38617

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1000

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3504

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697

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1

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4000

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50

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EAR99 NEC Tube TO-220 0 125 CHINA 0.192 / 1k
LM317T Available at 12 distributors

Distributor availability ofLM317T

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Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 20750 1 Order Now
COMPEL EUROPE 23099 1 Order Now
RS COMPONENTS EUROPE 16916 50 Order Now
AVNET AMERICA 29913 0 Order Now
FUTURE WORLDWIDE 11337 1 Order Now
ARROW EUROPE 425827 0 Order Now
Newark Element14 AMERICA 15 0 Order Now
ARROW AMERICA 108390 1000 Order Now
MOUSER WORLDWIDE 9507 1 Order Now
Farnell Element14 EUROPE 41378 1 Order Now
ANGLIA Live EUROPE 63650 50 Order Now
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20750

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23099

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16916

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29913

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11337

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15

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108390

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9507

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41378

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63650

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3950

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EAR99 NEC Tube TO-220 0 125 CHINA 0.144 / 1k
LM317P Available at 8 distributors

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Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4114 1 Order Now
COMPEL EUROPE 2647 1 Order Now
RS COMPONENTS EUROPE 2390 10 Order Now
AVNET AMERICA 1943 0 Order Now
ARROW EUROPE 3863 0 Order Now
Newark Element14 AMERICA 11 0 Order Now
Farnell Element14 EUROPE 1008 1 Order Now
ANGLIA Live EUROPE 3715 1 Order Now

Distributor reported inventory date: 2020-08-13

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DIGIKEY

Stock

4114

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

2647

Min.Order

1

Region

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RS COMPONENTS

Stock

2390

Min.Order

10

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EUROPE Order Now

AVNET

Stock

1943

Min.Order

0

Region

AMERICA Order Now

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Stock

3863

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

11

Min.Order

0

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Farnell Element14

Stock

1008

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1

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ANGLIA Live

Stock

3715

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-13

Active
EAR99 NEC Tube TO-220FP 0 125 CHINA 0.306 / 1k

LM317D2T-TR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.32 / 1k

Distributor availability ofLM317D2T-TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 7512 1 Order Now
COMPEL EUROPE 17962 1 Order Now
RS COMPONENTS EUROPE 7960 5 Order Now
AVNET AMERICA 29000 0 Order Now
FUTURE WORLDWIDE 631 1 Order Now
ARROW EUROPE 117473 0 Order Now
Newark Element14 AMERICA 524 0 Order Now
ARROW AMERICA 29000 1000 Order Now
MOUSER WORLDWIDE 6838 1 Order Now
Farnell Element14 EUROPE 15697 1 Order Now

Distributor reported inventory date: 2020-08-13

Distributor Name

DIGIKEY

Stock

7512

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

17962

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

7960

Min.Order

5

Region

EUROPE Order Now

AVNET

Stock

29000

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

631

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

117473

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

524

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

29000

Min.Order

1000

Region

AMERICA Order Now

MOUSER

Stock

6838

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

15697

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-13

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

D2PAK

Operating Temperature (°C)

(min)

0

(max)

125

Budgetary Price (US$)* / Qty

0.32 / 1k

Country of Origin

CHINA

LM317BT

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.23 / 1k

Distributor availability ofLM317BT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 830 1 Order Now
RS COMPONENTS EUROPE 700 10 Order Now
ARROW EUROPE 2160 0 Order Now
MOUSER WORLDWIDE 2439 1 Order Now
Farnell Element14 EUROPE 910 1 Order Now

Distributor reported inventory date: 2020-08-13

Distributor Name

DIGIKEY

Stock

830

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

700

Min.Order

10

Region

EUROPE Order Now

ARROW

Stock

2160

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

2439

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

910

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-13

ECCN (EU)

NEC

Packing Type

Tube

Package

TO-220

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

0.23 / 1k

Country of Origin

CHINA

LM317T-DG

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.192 / 1k

Distributor availability ofLM317T-DG

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3458 1 Order Now
COMPEL EUROPE 932 1 Order Now
RS COMPONENTS EUROPE 525 25 Order Now
AVNET AMERICA 45906 0 Order Now
FUTURE WORLDWIDE 1658 1 Order Now
ARROW EUROPE 7790 0 Order Now
Newark Element14 AMERICA 84 0 Order Now
ARROW AMERICA 38617 1000 Order Now
MOUSER WORLDWIDE 3504 1 Order Now
Farnell Element14 EUROPE 697 1 Order Now
RUTRONIK EUROPE 4000 50 Order Now

Distributor reported inventory date: 2020-08-13

Distributor Name

DIGIKEY

Stock

3458

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

932

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

525

Min.Order

25

Region

EUROPE Order Now

AVNET

Stock

45906

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

1658

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

7790

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

84

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

38617

Min.Order

1000

Region

AMERICA Order Now

MOUSER

Stock

3504

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

697

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

4000

Min.Order

50

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-13

ECCN (EU)

NEC

Packing Type

Tube

Package

TO-220

Operating Temperature (°C)

(min)

0

(max)

125

Budgetary Price (US$)* / Qty

0.192 / 1k

Country of Origin

CHINA

LM317T

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.144 / 1k

Distributor availability ofLM317T

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 20750 1 Order Now
COMPEL EUROPE 23099 1 Order Now
RS COMPONENTS EUROPE 16916 50 Order Now
AVNET AMERICA 29913 0 Order Now
FUTURE WORLDWIDE 11337 1 Order Now
ARROW EUROPE 425827 0 Order Now
Newark Element14 AMERICA 15 0 Order Now
ARROW AMERICA 108390 1000 Order Now
MOUSER WORLDWIDE 9507 1 Order Now
Farnell Element14 EUROPE 41378 1 Order Now
ANGLIA Live EUROPE 63650 50 Order Now
RUTRONIK EUROPE 3950 50 Order Now

Distributor reported inventory date: 2020-08-13

Distributor Name

DIGIKEY

Stock

20750

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

23099

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

16916

Min.Order

50

Region

EUROPE Order Now

AVNET

Stock

29913

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

11337

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

425827

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

15

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

108390

Min.Order

1000

Region

AMERICA Order Now

MOUSER

Stock

9507

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

41378

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

63650

Min.Order

50

Region

EUROPE Order Now

RUTRONIK

Stock

3950

Min.Order

50

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-13

ECCN (EU)

NEC

Packing Type

Tube

Package

TO-220

Operating Temperature (°C)

(min)

0

(max)

125

Budgetary Price (US$)* / Qty

0.144 / 1k

Country of Origin

CHINA

LM317P

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.306 / 1k

Distributor availability ofLM317P

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4114 1 Order Now
COMPEL EUROPE 2647 1 Order Now
RS COMPONENTS EUROPE 2390 10 Order Now
AVNET AMERICA 1943 0 Order Now
ARROW EUROPE 3863 0 Order Now
Newark Element14 AMERICA 11 0 Order Now
Farnell Element14 EUROPE 1008 1 Order Now
ANGLIA Live EUROPE 3715 1 Order Now

Distributor reported inventory date: 2020-08-13

Distributor Name

DIGIKEY

Stock

4114

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

2647

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

2390

Min.Order

10

Region

EUROPE Order Now

AVNET

Stock

1943

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

3863

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

11

Min.Order

0

Region

AMERICA Order Now

Farnell Element14

Stock

1008

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

3715

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-13

ECCN (EU)

NEC

Packing Type

Tube

Package

TO-220FP

Operating Temperature (°C)

(min)

0

(max)

125

Budgetary Price (US$)* / Qty

0.306 / 1k

Country of Origin

CHINA

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors