1.2 V to 37 V adjustable voltage regulators

Download datasheet

Order from our eStore and our distributors

Buy now
Overview
Tools & Software
Resources
Solutions
Quality & Reliability
Sales Briefcase
eDesignSuite
Get Started
Sample & Buy
Partner products
  • 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

Sample & Buy

Part Number
Package
Packing Type
Temperature (°C) Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
More info
Order from Distributors
Order from ST
min
max
LM317D2T-TR D2PAK Tape And Reel 0 125
Active
0.32 10000 EAR99
MORE INFO

Country of Origin:

CHINA

Check Availability

Distributor availability ofLM317D2T-TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 9984 1 Order Now
RS COMPONENTS EUROPE 11235 5 Order Now
AVNET AMERICA 70000 0 Order Now
FUTURE WORLDWIDE 120136 1 Order Now
ARROW EUROPE 13612 0 Order Now
Newark Element14 AMERICA 717 0 Order Now
ARROW AMERICA 6000 1000 Order Now
MOUSER WORLDWIDE 16907 1 Order Now
Farnell Element14 EUROPE 20501 1 Order Now
RUTRONIK EUROPE 12000 1000 Order Now

Distributor reported inventory date: 2019-07-21

Distributor Name

DIGIKEY

Stock

9984

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

11235

Min.Order

5

Region

EUROPE Order Now

AVNET

Stock

70000

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

120136

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

13612

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

717

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

6000

Min.Order

1000

Region

AMERICA Order Now

MOUSER

Stock

16907

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

20501

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

12000

Min.Order

1000

Region

EUROPE Order Now

Distributor reported inventory date: 2019-07-21

Buy now
LM317T TO-220 Tube 0 125
Active
0.144 10000 EAR99
MORE INFO

Country of Origin:

CHINA

Check Availability

Distributor availability ofLM317T

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 28623 1 Order Now
RS COMPONENTS EUROPE 32187 50 Order Now
AVNET AMERICA 154346 0 Order Now
FUTURE WORLDWIDE 21123 1 Order Now
ARROW EUROPE 306094 0 Order Now
ARROW AMERICA 74613 1 Order Now
MOUSER WORLDWIDE 31019 1 Order Now
Farnell Element14 EUROPE 62976 1 Order Now
ANGLIA Live EUROPE 97750 50 Order Now
RUTRONIK EUROPE 6900 50 Order Now

Distributor reported inventory date: 2019-07-21

Distributor Name

DIGIKEY

Stock

28623

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

32187

Min.Order

50

Region

EUROPE Order Now

AVNET

Stock

154346

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

21123

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

306094

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

74613

Min.Order

1

Region

AMERICA Order Now

MOUSER

Stock

31019

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

62976

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

97750

Min.Order

50

Region

EUROPE Order Now

RUTRONIK

Stock

6900

Min.Order

50

Region

EUROPE Order Now

Distributor reported inventory date: 2019-07-21

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

Country of Origin:

CHINA

Check Availability

Distributor availability ofLM317P

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 4240 10 Order Now
AVNET AMERICA 343 0 Order Now
FUTURE WORLDWIDE 2485 50 Order Now
ARROW EUROPE 4 0 Order Now
Newark Element14 AMERICA 29 0 Order Now
MOUSER WORLDWIDE 7558 1 Order Now
Farnell Element14 EUROPE 2134 1 Order Now
ANGLIA Live EUROPE 2550 1 Order Now

Distributor reported inventory date: 2019-07-21

Distributor Name

RS COMPONENTS

Stock

4240

Min.Order

10

Region

EUROPE Order Now

AVNET

Stock

343

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

2485

Min.Order

50

Region

WORLDWIDE Order Now

ARROW

Stock

4

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

29

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

7558

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2134

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

2550

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-07-21

Buy now

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 9984 1 Order Now
RS COMPONENTS EUROPE 11235 5 Order Now
AVNET AMERICA 70000 0 Order Now
FUTURE WORLDWIDE 120136 1 Order Now
ARROW EUROPE 13612 0 Order Now
Newark Element14 AMERICA 717 0 Order Now
ARROW AMERICA 6000 1000 Order Now
MOUSER WORLDWIDE 16907 1 Order Now
Farnell Element14 EUROPE 20501 1 Order Now
RUTRONIK EUROPE 12000 1000 Order Now

Distributor reported inventory date: 2019-07-21

Distributor Name

DIGIKEY

Stock

9984

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

11235

Min.Order

5

Region

EUROPE Order Now

AVNET

Stock

70000

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

120136

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

13612

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

717

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

6000

Min.Order

1000

Region

AMERICA Order Now

MOUSER

Stock

16907

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

20501

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

12000

Min.Order

1000

Region

EUROPE Order Now

Distributor reported inventory date: 2019-07-21

Operating Temperature (°C)

(min)

0

(max)

125

Marketing Status

Active

Unit Price (US$)

0.32

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 28623 1 Order Now
RS COMPONENTS EUROPE 32187 50 Order Now
AVNET AMERICA 154346 0 Order Now
FUTURE WORLDWIDE 21123 1 Order Now
ARROW EUROPE 306094 0 Order Now
ARROW AMERICA 74613 1 Order Now
MOUSER WORLDWIDE 31019 1 Order Now
Farnell Element14 EUROPE 62976 1 Order Now
ANGLIA Live EUROPE 97750 50 Order Now
RUTRONIK EUROPE 6900 50 Order Now

Distributor reported inventory date: 2019-07-21

Distributor Name

DIGIKEY

Stock

28623

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

32187

Min.Order

50

Region

EUROPE Order Now

AVNET

Stock

154346

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

21123

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

306094

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

74613

Min.Order

1

Region

AMERICA Order Now

MOUSER

Stock

31019

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

62976

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

97750

Min.Order

50

Region

EUROPE Order Now

RUTRONIK

Stock

6900

Min.Order

50

Region

EUROPE Order Now

Distributor reported inventory date: 2019-07-21

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
RS COMPONENTS EUROPE 4240 10 Order Now
AVNET AMERICA 343 0 Order Now
FUTURE WORLDWIDE 2485 50 Order Now
ARROW EUROPE 4 0 Order Now
Newark Element14 AMERICA 29 0 Order Now
MOUSER WORLDWIDE 7558 1 Order Now
Farnell Element14 EUROPE 2134 1 Order Now
ANGLIA Live EUROPE 2550 1 Order Now

Distributor reported inventory date: 2019-07-21

Distributor Name

RS COMPONENTS

Stock

4240

Min.Order

10

Region

EUROPE Order Now

AVNET

Stock

343

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

2485

Min.Order

50

Region

WORLDWIDE Order Now

ARROW

Stock

4

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

29

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

7558

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2134

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

2550

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-07-21

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

Featured Products

Recommended for you

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS0433
      1.2 V to 37 V adjustable voltage regulators
      20.0
      985.09 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

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

(**) 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.