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  • The LM2931 are very low drop regulators. The very low drop voltage and the low quiescent current make them particular suitable for low noise, low power applications and in battery-powered systems. In the 8-pin configuration (SO-8), fully compatible with the older L78L family, a shutdown logic control function is available. This means that when the device is used as a local regulator it is possible to put a part of the board in standby, decreasing total power consumption. Ideal for automotive applications, LM2931 is protected from reverse battery installations or 2 battery jumps. During the transient, such as a 60 V load dump, when the input voltage can exceed the specified maximum operating input voltage of 26 V, the regulator automatically shuts down to protect both internal circuitry and the load.

    Key Features

    • AEC-Q100 qualified (DPAK only)
    • Very low dropout voltage (90 mV typ. at 10 mA load)
    • Low quiescent current (typ. 2.5 mA, at 100 mA load)
    • Output current up to 100 mA
    • Adjustable (from VOUT = 2.5 V only SO-8) and fixed (3.3 V and 5 V) output voltage version
    • Internal current and thermal limit
    • Load dump protection up to 60 V
    • Reverse transient protection up to - 50 V
    • Temperature range: - 40 to 125 °C
    • Package available: TO-92, DPAK, SO-8 (with inhibit control)

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Technical Documentation

    • Description Version Size Action
      DS1760
      Very low drop voltage regulators with inhibit function
      23.0
      1.1 MB
      PDF
      DS1760

      Very low drop voltage regulators with inhibit function

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

    • Description Version Size Action
      Low-dropout (LDO) linear voltage regulators Quick Reference Guide 2.1
      1.78 MB
      PDF
      Power management for handheld and portable 2.0
      1.09 MB
      PDF

      Low-dropout (LDO) linear voltage regulators Quick Reference Guide

      Power management for handheld and portable

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
LM2931AD33R
Active
SO-8 Industrial Ecopack2
LM2931AD50R
Active
SO-8 Industrial Ecopack2
LM2931ADT50R
Active
DPAK Industrial Ecopack2
LM2931AZ50R
Active
TO-92 Industrial Ecopack2
LM2931D-R
NRND
SO-8 Industrial Ecopack2

LM2931AD33R

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LM2931AD50R

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LM2931ADT50R

Package:

DPAK

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DPAK

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LM2931AZ50R

Package:

TO-92

Material Declaration**:

PDF XML

Marketing Status

Active

Package

TO-92

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LM2931D-R

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

NRND

Package

SO-8

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.

Sample & Buy

Part Number
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Package
Packing Type
Output Voltage (V) (nom)
Output Tolerance (typ)
Output Current (A) (nom)
Marketing Status
ECCN (US)
Country of Origin
Budgetary Price (US$)*/Qty
LM2931D-R Available at 9 distributors

Distributor availability ofLM2931D-R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1713 1 Order Now
YOSUN ASIA/PACIFIC 2500 2500 Order Now
COMPEL EUROPE 90 1 Order Now
RS COMPONENTS EUROPE 985 1 Order Now
AVNET AMERICA 20000 0 Order Now
ARROW EUROPE 5000 0 Order Now
ARROW AMERICA 5000 2500 Order Now
MOUSER WORLDWIDE 3976 1 Order Now
Farnell Element14 EUROPE 986 1 Order Now

Distributor reported inventory date: 2020-07-11

Distributor Name

DIGIKEY

Stock

1713

Min.Order

1

Region

WORLDWIDE Order Now

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Stock

2500

Min.Order

2500

Region

ASIA/PACIFIC Order Now

COMPEL

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90

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

985

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1

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20000

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5000

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5000

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2500

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3976

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1

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Farnell Element14

Stock

986

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-11

Buy now SO-8 Tape And Reel - 5 0.1
NRND
EAR99 CHINA 0.24 / 1k
LM2931AD50R Available at 8 distributors

Distributor availability ofLM2931AD50R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3882 1 Order Now
COMPEL EUROPE 625 1 Order Now
RS COMPONENTS EUROPE 1510 1 Order Now
AVNET AMERICA 2500 0 Order Now
FUTURE WORLDWIDE 10000 2500 Order Now
MOUSER WORLDWIDE 3836 1 Order Now
Farnell Element14 EUROPE 2500 1 Order Now
ANGLIA Live EUROPE 10664 1 Order Now

Distributor reported inventory date: 2020-07-10

Distributor Name

DIGIKEY

Stock

3882

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

625

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

1510

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

2500

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

10000

Min.Order

2500

Region

WORLDWIDE Order Now

MOUSER

Stock

3836

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2500

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

10664

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-10

Buy now SO-8 Tape And Reel 5 5 0.1
Active
EAR99 CHINA 0.24 / 1k
LM2931ADT50R Available at 5 distributors

Distributor availability ofLM2931ADT50R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 7702 1 Order Now
RS COMPONENTS EUROPE 2385 1 Order Now
ARROW AMERICA 5000 2500 Order Now
MOUSER WORLDWIDE 4054 1 Order Now
Farnell Element14 EUROPE 1568 1 Order Now

Distributor reported inventory date: 2020-07-10

Distributor Name

DIGIKEY

Stock

7702

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2385

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

5000

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

4054

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1568

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-10

Buy now DPAK Tape And Reel 5 5 0.1
Active
EAR99 CHINA 0.32 / 1k
LM2931AZ50R Available at 4 distributors

Distributor availability ofLM2931AZ50R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3689 1 Order Now
RS COMPONENTS EUROPE 1050 10 Order Now
MOUSER WORLDWIDE 1667 1 Order Now
Farnell Element14 EUROPE 208 1 Order Now

Distributor reported inventory date: 2020-07-10

Distributor Name

DIGIKEY

Stock

3689

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1050

Min.Order

10

Region

EUROPE Order Now

MOUSER

Stock

1667

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

208

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-10

Buy now TO-92 Tape And Reel 5 5 0.1
Active
EAR99 CHINA 0.24 / 1k
LM2931AD33R Available at 7 distributors

Distributor availability ofLM2931AD33R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 24183 1 Order Now
AVNET AMERICA 5000 0 Order Now
ARROW EUROPE 2500 0 Order Now
ARROW AMERICA 92500 2500 Order Now
MOUSER WORLDWIDE 3305 1 Order Now
Farnell Element14 EUROPE 287 1 Order Now
RUTRONIK EUROPE 20000 2500 Order Now

Distributor reported inventory date: 2020-07-10

Distributor Name

DIGIKEY

Stock

24183

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

5000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

2500

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

92500

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

3305

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

287

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

20000

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-10

Buy now SO-8 Tape And Reel 3.3 5 0.1
Active
EAR99 CHINA 0.24 / 1k

LM2931D-R

Package

SO-8

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.24 / 1k

Distributor availability ofLM2931D-R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1713 1 Order Now
YOSUN ASIA/PACIFIC 2500 2500 Order Now
COMPEL EUROPE 90 1 Order Now
RS COMPONENTS EUROPE 985 1 Order Now
AVNET AMERICA 20000 0 Order Now
ARROW EUROPE 5000 0 Order Now
ARROW AMERICA 5000 2500 Order Now
MOUSER WORLDWIDE 3976 1 Order Now
Farnell Element14 EUROPE 986 1 Order Now

Distributor reported inventory date: 2020-07-11

Distributor Name

DIGIKEY

Stock

1713

Min.Order

1

Region

WORLDWIDE Order Now

YOSUN

Stock

2500

Min.Order

2500

Region

ASIA/PACIFIC Order Now

COMPEL

Stock

90

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

985

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

20000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

5000

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

5000

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

3976

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

986

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-11

Output Voltage (V) (nom)

-

Output Tolerance (typ)

5

Output Current (A) (nom)

0.1

Marketing Status

NRND

Budgetary Price (US$)* / Qty

0.24 / 1k

ECCN (US)

EAR99

Country of Origin

CHINA

LM2931AD50R

Package

SO-8

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.24 / 1k

Distributor availability ofLM2931AD50R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3882 1 Order Now
COMPEL EUROPE 625 1 Order Now
RS COMPONENTS EUROPE 1510 1 Order Now
AVNET AMERICA 2500 0 Order Now
FUTURE WORLDWIDE 10000 2500 Order Now
MOUSER WORLDWIDE 3836 1 Order Now
Farnell Element14 EUROPE 2500 1 Order Now
ANGLIA Live EUROPE 10664 1 Order Now

Distributor reported inventory date: 2020-07-10

Distributor Name

DIGIKEY

Stock

3882

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

625

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

1510

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

2500

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

10000

Min.Order

2500

Region

WORLDWIDE Order Now

MOUSER

Stock

3836

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2500

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

10664

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-10

Output Voltage (V) (nom)

5

Output Tolerance (typ)

5

Output Current (A) (nom)

0.1

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.24 / 1k

ECCN (US)

EAR99

Country of Origin

CHINA

LM2931ADT50R

Package

DPAK

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.32 / 1k

Distributor availability ofLM2931ADT50R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 7702 1 Order Now
RS COMPONENTS EUROPE 2385 1 Order Now
ARROW AMERICA 5000 2500 Order Now
MOUSER WORLDWIDE 4054 1 Order Now
Farnell Element14 EUROPE 1568 1 Order Now

Distributor reported inventory date: 2020-07-10

Distributor Name

DIGIKEY

Stock

7702

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2385

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

5000

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

4054

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1568

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-10

Output Voltage (V) (nom)

5

Output Tolerance (typ)

5

Output Current (A) (nom)

0.1

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.32 / 1k

ECCN (US)

EAR99

Country of Origin

CHINA

LM2931AZ50R

Package

TO-92

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.24 / 1k

Distributor availability ofLM2931AZ50R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3689 1 Order Now
RS COMPONENTS EUROPE 1050 10 Order Now
MOUSER WORLDWIDE 1667 1 Order Now
Farnell Element14 EUROPE 208 1 Order Now

Distributor reported inventory date: 2020-07-10

Distributor Name

DIGIKEY

Stock

3689

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1050

Min.Order

10

Region

EUROPE Order Now

MOUSER

Stock

1667

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

208

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-10

Output Voltage (V) (nom)

5

Output Tolerance (typ)

5

Output Current (A) (nom)

0.1

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.24 / 1k

ECCN (US)

EAR99

Country of Origin

CHINA

LM2931AD33R

Package

SO-8

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.24 / 1k

Distributor availability ofLM2931AD33R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 24183 1 Order Now
AVNET AMERICA 5000 0 Order Now
ARROW EUROPE 2500 0 Order Now
ARROW AMERICA 92500 2500 Order Now
MOUSER WORLDWIDE 3305 1 Order Now
Farnell Element14 EUROPE 287 1 Order Now
RUTRONIK EUROPE 20000 2500 Order Now

Distributor reported inventory date: 2020-07-10

Distributor Name

DIGIKEY

Stock

24183

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

5000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

2500

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

92500

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

3305

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

287

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

20000

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-10

Output Voltage (V) (nom)

3.3

Output Tolerance (typ)

5

Output Current (A) (nom)

0.1

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.24 / 1k

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