1.2 V to 37 V adjustable voltage regulators

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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

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LM317D2T-TR D2PAK Tape And Reel 0 125
Active
0.32 10000 EAR99
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Country of Origin:

CHINA

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LM317BT TO-220 Tube -40 125
Active
0.23 10000 EAR99
MORE INFO

Country of Origin:

CHINA

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Farnell Element14 EUROPE 1088 1 Order Now

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1190

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4450

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3205

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1088

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LM317T-DG TO-220 Tube 0 125
Active
0.192 10000 EAR99
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Country of Origin:

CHINA

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Distributor availability ofLM317T-DG

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DIGIKEY WORLDWIDE 2470 1 Order Now
RS COMPONENTS EUROPE 1225 25 Order Now
FUTURE WORLDWIDE 35028 1 Order Now
ARROW EUROPE 10471 0 Order Now
ARROW AMERICA 666 1000 Order Now
P&S ASIA/PACIFIC 14000 1 Order Now
MOUSER WORLDWIDE 2642 1 Order Now
Farnell Element14 EUROPE 900 1 Order Now

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2470

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1

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1225

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25

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Stock

35028

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1

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10471

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0

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EUROPE Order Now

ARROW

Stock

666

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1000

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14000

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1

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Stock

2642

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900

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1

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LM317T TO-220 Tube 0 125
Active
0.144 10000 EAR99
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Country of Origin:

CHINA

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Distributor availability ofLM317T

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 47448 1 Order Now
RS COMPONENTS EUROPE 20108 50 Order Now
AVNET AMERICA 97824 0 Order Now
FUTURE WORLDWIDE 18608 1 Order Now
ARROW EUROPE 207398 0 Order Now
ARROW AMERICA 102636 1 Order Now
MOUSER WORLDWIDE 40366 1 Order Now
Farnell Element14 EUROPE 58693 1 Order Now
ANGLIA Live EUROPE 53350 50 Order Now
RUTRONIK EUROPE 6450 50 Order Now

Distributor reported inventory date: 2019-11-17

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DIGIKEY

Stock

47448

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1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

20108

Min.Order

50

Region

EUROPE Order Now

AVNET

Stock

97824

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

18608

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

207398

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0

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ARROW

Stock

102636

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1

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Stock

40366

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1

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58693

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53350

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50

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6450

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50

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LM317P TO-220FP Tube 0 125
Active
0.306 10000 EAR99
MORE INFO

Country of Origin:

CHINA

Check Availability

Distributor availability ofLM317P

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Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3808 1 Order Now
RS COMPONENTS EUROPE 3740 10 Order Now
AVNET AMERICA 593 0 Order Now
FUTURE WORLDWIDE 2600 50 Order Now
ARROW EUROPE 5958 0 Order Now
Newark Element14 AMERICA 25 0 Order Now
MOUSER WORLDWIDE 4193 1 Order Now
Farnell Element14 EUROPE 1212 1 Order Now
ANGLIA Live EUROPE 7050 1 Order Now
RUTRONIK EUROPE 1150 50 Order Now

Distributor reported inventory date: 2019-11-17

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DIGIKEY

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3808

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1

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3740

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10

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AVNET

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593

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2600

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50

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5958

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25

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0

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Stock

4193

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Farnell Element14

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1212

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1

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ANGLIA Live

Stock

7050

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1

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RUTRONIK

Stock

1150

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50

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Distributor reported inventory date: 2019-11-17

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LM317D2T-TR

Package

D2PAK

Packing Type

Tape And Reel

Unit Price (US$)

0.32*

Distributor availability ofLM317D2T-TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 13374 1 Order Now
RS COMPONENTS EUROPE 9870 5 Order Now
AVNET AMERICA 53000 0 Order Now
FUTURE WORLDWIDE 79112 1 Order Now
ARROW EUROPE 13012 0 Order Now
Newark Element14 AMERICA 664 0 Order Now
ARROW AMERICA 2000 1000 Order Now
MOUSER WORLDWIDE 14188 1 Order Now
Farnell Element14 EUROPE 17153 1 Order Now
RUTRONIK EUROPE 5000 1000 Order Now

Distributor reported inventory date: 2019-11-17

Distributor Name

DIGIKEY

Stock

13374

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

9870

Min.Order

5

Region

EUROPE Order Now

AVNET

Stock

53000

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

79112

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

13012

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

664

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

2000

Min.Order

1000

Region

AMERICA Order Now

MOUSER

Stock

14188

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

17153

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

5000

Min.Order

1000

Region

EUROPE Order Now

Distributor reported inventory date: 2019-11-17

Operating Temperature (°C)

(min)

0

(max)

125

Marketing Status

Active

Unit Price (US$)

0.32

Quantity

10000

ECCN (US)

EAR99

Country of Origin

CHINA

LM317BT

Package

TO-220

Packing Type

Tube

Unit Price (US$)

0.23*

Distributor availability ofLM317BT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4049 1 Order Now
RS COMPONENTS EUROPE 1190 10 Order Now
ARROW EUROPE 4450 0 Order Now
MOUSER WORLDWIDE 3205 1 Order Now
Farnell Element14 EUROPE 1088 1 Order Now

Distributor reported inventory date: 2019-11-17

Distributor Name

DIGIKEY

Stock

4049

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1190

Min.Order

10

Region

EUROPE Order Now

ARROW

Stock

4450

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

3205

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1088

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-11-17

Operating Temperature (°C)

(min)

-40

(max)

125

Marketing Status

Active

Unit Price (US$)

0.23

Quantity

10000

ECCN (US)

EAR99

Country of Origin

CHINA

LM317T-DG

Package

TO-220

Packing Type

Tube

Unit Price (US$)

0.192*

Distributor availability ofLM317T-DG

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2470 1 Order Now
RS COMPONENTS EUROPE 1225 25 Order Now
FUTURE WORLDWIDE 35028 1 Order Now
ARROW EUROPE 10471 0 Order Now
ARROW AMERICA 666 1000 Order Now
P&S ASIA/PACIFIC 14000 1 Order Now
MOUSER WORLDWIDE 2642 1 Order Now
Farnell Element14 EUROPE 900 1 Order Now

Distributor reported inventory date: 2019-11-17

Distributor Name

DIGIKEY

Stock

2470

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1225

Min.Order

25

Region

EUROPE Order Now

FUTURE

Stock

35028

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

10471

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

666

Min.Order

1000

Region

AMERICA Order Now

P&S

Stock

14000

Min.Order

1

Region

ASIA/PACIFIC Order Now

MOUSER

Stock

2642

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

900

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-11-17

Operating Temperature (°C)

(min)

0

(max)

125

Marketing Status

Active

Unit Price (US$)

0.192

Quantity

10000

ECCN (US)

EAR99

Country of Origin

CHINA

LM317T

Package

TO-220

Packing Type

Tube

Unit Price (US$)

0.144*

Distributor availability ofLM317T

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 47448 1 Order Now
RS COMPONENTS EUROPE 20108 50 Order Now
AVNET AMERICA 97824 0 Order Now
FUTURE WORLDWIDE 18608 1 Order Now
ARROW EUROPE 207398 0 Order Now
ARROW AMERICA 102636 1 Order Now
MOUSER WORLDWIDE 40366 1 Order Now
Farnell Element14 EUROPE 58693 1 Order Now
ANGLIA Live EUROPE 53350 50 Order Now
RUTRONIK EUROPE 6450 50 Order Now

Distributor reported inventory date: 2019-11-17

Distributor Name

DIGIKEY

Stock

47448

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

20108

Min.Order

50

Region

EUROPE Order Now

AVNET

Stock

97824

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

18608

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

207398

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

102636

Min.Order

1

Region

AMERICA Order Now

MOUSER

Stock

40366

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

58693

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

53350

Min.Order

50

Region

EUROPE Order Now

RUTRONIK

Stock

6450

Min.Order

50

Region

EUROPE Order Now

Distributor reported inventory date: 2019-11-17

Operating Temperature (°C)

(min)

0

(max)

125

Marketing Status

Active

Unit Price (US$)

0.144

Quantity

10000

ECCN (US)

EAR99

Country of Origin

CHINA

LM317P

Package

TO-220FP

Packing Type

Tube

Unit Price (US$)

0.306*

Distributor availability ofLM317P

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3808 1 Order Now
RS COMPONENTS EUROPE 3740 10 Order Now
AVNET AMERICA 593 0 Order Now
FUTURE WORLDWIDE 2600 50 Order Now
ARROW EUROPE 5958 0 Order Now
Newark Element14 AMERICA 25 0 Order Now
MOUSER WORLDWIDE 4193 1 Order Now
Farnell Element14 EUROPE 1212 1 Order Now
ANGLIA Live EUROPE 7050 1 Order Now
RUTRONIK EUROPE 1150 50 Order Now

Distributor reported inventory date: 2019-11-17

Distributor Name

DIGIKEY

Stock

3808

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

3740

Min.Order

10

Region

EUROPE Order Now

AVNET

Stock

593

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

2600

Min.Order

50

Region

WORLDWIDE Order Now

ARROW

Stock

5958

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

25

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

4193

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1212

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

7050

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

1150

Min.Order

50

Region

EUROPE Order Now

Distributor reported inventory date: 2019-11-17

Operating Temperature (°C)

(min)

0

(max)

125

Marketing Status

Active

Unit Price (US$)

0.306

Quantity

10000

ECCN (US)

EAR99

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

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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
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      Linear and Switching Voltage Regulators Selection Guide

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**:

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**:

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.