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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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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

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ECCN (US)
ECCN (EU)
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Package
Temperature (°C) Output Voltage (V) (nom)
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More info
min
max
LM2931D-R Available at 9 distributors

Distributor availability ofLM2931D-R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1437 1 Order Now
YOSUN ASIA/PACIFIC 2500 1 Order Now
COMPEL EUROPE 90 1 Order Now
RS COMPONENTS EUROPE 975 1 Order Now
AVNET AMERICA 15000 0 Order Now
ARROW EUROPE 7500 0 Order Now
ARROW AMERICA 5000 2500 Order Now
MOUSER WORLDWIDE 2406 1 Order Now
Farnell Element14 EUROPE 966 1 Order Now

Distributor reported inventory date: 2020-10-26

Distributor Name

DIGIKEY

Stock

1437

Min.Order

1

Region

WORLDWIDE Order Now

YOSUN

Stock

2500

Min.Order

1

Region

ASIA/PACIFIC Order Now

COMPEL

Stock

90

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

975

Min.Order

1

Region

EUROPE Order Now

AVNET

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15000

Min.Order

0

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AMERICA Order Now

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Stock

7500

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5000

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2500

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Stock

2406

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1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

966

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-26

Buy Direct
NRND
EAR99 NEC Tape And Reel SO-8 -40 125 - 0.24 / 1k
MORE INFO

Output Tolerance (typ):

5

Output Current (A) (nom):

0.1

Unit Price (US$):

0.24

Country of Origin:

CHINA

LM2931AD50R Available at 8 distributors

Distributor availability ofLM2931AD50R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3853 1 Order Now
COMPEL EUROPE 889 1 Order Now
RS COMPONENTS EUROPE 1260 1 Order Now
FUTURE WORLDWIDE 2500 2500 Order Now
ARROW EUROPE 2500 0 Order Now
MOUSER WORLDWIDE 3472 1 Order Now
Farnell Element14 EUROPE 2497 1 Order Now
ANGLIA Live EUROPE 10514 1 Order Now

Distributor reported inventory date: 2020-10-25

Distributor Name

DIGIKEY

Stock

3853

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

889

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

1260

Min.Order

1

Region

EUROPE Order Now

FUTURE

Stock

2500

Min.Order

2500

Region

WORLDWIDE Order Now

ARROW

Stock

2500

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

3472

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2497

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

10514

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-25

Buy Direct
Active
EAR99 NEC Tape And Reel SO-8 -40 125 5 0.24 / 1k
MORE INFO

Output Tolerance (typ):

5

Output Current (A) (nom):

0.1

Unit Price (US$):

0.24

Country of Origin:

CHINA

LM2931ADT50R Available at 5 distributors

Distributor availability ofLM2931ADT50R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4835 1 Order Now
RS COMPONENTS EUROPE 2375 1 Order Now
ARROW AMERICA 5000 2500 Order Now
MOUSER WORLDWIDE 3195 1 Order Now
Farnell Element14 EUROPE 1563 1 Order Now

Distributor reported inventory date: 2020-10-25

Distributor Name

DIGIKEY

Stock

4835

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2375

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

5000

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

3195

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1563

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-25

Buy Direct
Active
EAR99 NEC Tape And Reel DPAK -40 125 5 0.32 / 1k
MORE INFO

Output Tolerance (typ):

5

Output Current (A) (nom):

0.1

Unit Price (US$):

0.32

Country of Origin:

CHINA

LM2931AZ50R Available at 5 distributors

Distributor availability ofLM2931AZ50R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3678 1 Order Now
RS COMPONENTS EUROPE 1050 10 Order Now
AVNET AMERICA 4000 0 Order Now
MOUSER WORLDWIDE 5050 1 Order Now
Farnell Element14 EUROPE 196 1 Order Now

Distributor reported inventory date: 2020-10-25

Distributor Name

DIGIKEY

Stock

3678

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1050

Min.Order

10

Region

EUROPE Order Now

AVNET

Stock

4000

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

5050

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

196

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-25

Buy Direct
Active
EAR99 NEC Tape And Reel TO-92 -40 125 5 0.24 / 1k
MORE INFO

Output Tolerance (typ):

5

Output Current (A) (nom):

0.1

Unit Price (US$):

0.24

Country of Origin:

CHINA

LM2931AD33R Available at 6 distributors

Distributor availability ofLM2931AD33R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 20194 1 Order Now
AVNET AMERICA 10000 0 Order Now
ARROW EUROPE 2500 0 Order Now
ARROW AMERICA 87500 2500 Order Now
MOUSER WORLDWIDE 4663 1 Order Now
Farnell Element14 EUROPE 2667 1 Order Now

Distributor reported inventory date: 2020-10-25

Distributor Name

DIGIKEY

Stock

20194

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

10000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

2500

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

87500

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

4663

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2667

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-25

Buy Direct
Active
EAR99 NEC Tape And Reel SO-8 -40 125 3.3 0.24 / 1k
MORE INFO

Output Tolerance (typ):

5

Output Current (A) (nom):

0.1

Unit Price (US$):

0.24

Country of Origin:

CHINA

LM2931D-R

Marketing Status

NRND

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.24 / 1k

Distributor availability ofLM2931D-R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1437 1 Order Now
YOSUN ASIA/PACIFIC 2500 1 Order Now
COMPEL EUROPE 90 1 Order Now
RS COMPONENTS EUROPE 975 1 Order Now
AVNET AMERICA 15000 0 Order Now
ARROW EUROPE 7500 0 Order Now
ARROW AMERICA 5000 2500 Order Now
MOUSER WORLDWIDE 2406 1 Order Now
Farnell Element14 EUROPE 966 1 Order Now

Distributor reported inventory date: 2020-10-26

Distributor Name

DIGIKEY

Stock

1437

Min.Order

1

Region

WORLDWIDE Order Now

YOSUN

Stock

2500

Min.Order

1

Region

ASIA/PACIFIC Order Now

COMPEL

Stock

90

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

975

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

15000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

7500

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

5000

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

2406

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

966

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-26

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SO-8

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

-

Output Tolerance (typ)

5

Output Current (A) (nom)

0.1

Budgetary Price (US$)* / Qty

0.24 / 1k

Country of Origin

CHINA

LM2931AD50R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.24 / 1k

Distributor availability ofLM2931AD50R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3853 1 Order Now
COMPEL EUROPE 889 1 Order Now
RS COMPONENTS EUROPE 1260 1 Order Now
FUTURE WORLDWIDE 2500 2500 Order Now
ARROW EUROPE 2500 0 Order Now
MOUSER WORLDWIDE 3472 1 Order Now
Farnell Element14 EUROPE 2497 1 Order Now
ANGLIA Live EUROPE 10514 1 Order Now

Distributor reported inventory date: 2020-10-25

Distributor Name

DIGIKEY

Stock

3853

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

889

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

1260

Min.Order

1

Region

EUROPE Order Now

FUTURE

Stock

2500

Min.Order

2500

Region

WORLDWIDE Order Now

ARROW

Stock

2500

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

3472

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2497

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

10514

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-25

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SO-8

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

5

Output Tolerance (typ)

5

Output Current (A) (nom)

0.1

Budgetary Price (US$)* / Qty

0.24 / 1k

Country of Origin

CHINA

LM2931ADT50R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.32 / 1k

Distributor availability ofLM2931ADT50R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4835 1 Order Now
RS COMPONENTS EUROPE 2375 1 Order Now
ARROW AMERICA 5000 2500 Order Now
MOUSER WORLDWIDE 3195 1 Order Now
Farnell Element14 EUROPE 1563 1 Order Now

Distributor reported inventory date: 2020-10-25

Distributor Name

DIGIKEY

Stock

4835

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2375

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

5000

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

3195

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1563

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-25

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

DPAK

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

5

Output Tolerance (typ)

5

Output Current (A) (nom)

0.1

Budgetary Price (US$)* / Qty

0.32 / 1k

Country of Origin

CHINA

LM2931AZ50R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.24 / 1k

Distributor availability ofLM2931AZ50R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3678 1 Order Now
RS COMPONENTS EUROPE 1050 10 Order Now
AVNET AMERICA 4000 0 Order Now
MOUSER WORLDWIDE 5050 1 Order Now
Farnell Element14 EUROPE 196 1 Order Now

Distributor reported inventory date: 2020-10-25

Distributor Name

DIGIKEY

Stock

3678

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1050

Min.Order

10

Region

EUROPE Order Now

AVNET

Stock

4000

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

5050

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

196

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-25

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

TO-92

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

5

Output Tolerance (typ)

5

Output Current (A) (nom)

0.1

Budgetary Price (US$)* / Qty

0.24 / 1k

Country of Origin

CHINA

LM2931AD33R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.24 / 1k

Distributor availability ofLM2931AD33R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 20194 1 Order Now
AVNET AMERICA 10000 0 Order Now
ARROW EUROPE 2500 0 Order Now
ARROW AMERICA 87500 2500 Order Now
MOUSER WORLDWIDE 4663 1 Order Now
Farnell Element14 EUROPE 2667 1 Order Now

Distributor reported inventory date: 2020-10-25

Distributor Name

DIGIKEY

Stock

20194

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

10000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

2500

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

87500

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

4663

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2667

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-25

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SO-8

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

3.3

Output Tolerance (typ)

5

Output Current (A) (nom)

0.1

Budgetary Price (US$)* / Qty

0.24 / 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