L4940

Active
Design Win

1.5 A very low drop voltage regulator IC

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CAD Resources
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Product overview

Description

The L4940 series of three-terminal positive regulators is available in TO-220 and D²PAK packages and with several fixed output voltages, making it useful in a wide range of industrial and consumer applications. Thanks to their very low input/output voltage drop, these devices are particularly suitable for battery-powered equipment, reducing consumption and prolonging battery-life. Each type employs internal current limiting, anti-saturation circuit, thermal shutdown and safe area protection.
  • All features

    • Precise 5, 8.5, 12 V outputs
    • Low dropout voltage (450 mV typ. at 1 A)
    • Very low quiescent current
    • Thermal shutdown
    • Short-circuit protection
    • Reverse polarity protection

EDA Symbols, Footprints and 3D Models

STMicroelectronics - L4940

Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.

Symbols

Symbols

Footprints

Footprints

3D model

3D models

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L4940D2T12-TR
Active
D2PAK Industrial Ecopack2
L4940D2T5-TR
Active
D2PAK Industrial Ecopack2
L4940V5
Active
TO-220 Industrial Ecopack2
L4940V85
Active
TO-220 Industrial Ecopack2

L4940D2T12-TR

Package:

D2PAK

Material Declaration**:

Marketing Status

Active

Package

D2PAK

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L4940D2T5-TR

Package:

D2PAK

Material Declaration**:

Marketing Status

Active

Package

D2PAK

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L4940V5

Package:

TO-220

Material Declaration**:

PDF XML

Marketing Status

Active

Package

TO-220

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L4940V85

Package:

TO-220

Material Declaration**:

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.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Output Voltage (V) (nom)
Budgetary Price (US$)*/Qty
More info
min
max
L4940V5 Available at 3 distributors

Distributor availability ofL4940V5

Distributor Name
Region Stock Min. Order Third party link
COMPEL EUROPE 215 1 Buy from Distributor
RS COMPONENTS EUROPE 839 1 Buy from Distributor
ANGLIA Live EUROPE 1899 1 Buy from Distributor

Distributor reported inventory date: 2022-05-23

Distributor Name

COMPEL

Stock

215

Min.Order

1

RS COMPONENTS

Stock

839

Min.Order

1

ANGLIA Live

Stock

1899

Min.Order

1

Distributor reported inventory date: 2022-05-23

Active
EAR99 NEC Tube TO-220 -40 150 5
MORE INFO

Output Tolerance (typ):

2

Output Current (A) (nom):

1.5

Unit Price (US$):

0.8488

Country of Origin:

CHINA

L4940D2T12-TR Available at 4 distributors

Distributor availability ofL4940D2T12-TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2363 1 Buy from Distributor
FUTURE WORLDWIDE 5000 1000 Buy from Distributor
Newark Element14 AMERICA 1 0 Buy from Distributor
Farnell Element14 EUROPE 957 1 Buy from Distributor

Distributor reported inventory date: 2022-05-23

Distributor Name

DIGIKEY

Stock

2363

Min.Order

1

Region

WORLDWIDE Buy from Distributor

FUTURE

Stock

5000

Min.Order

1000

Region

WORLDWIDE Buy from Distributor

Newark Element14

Stock

1

Min.Order

0

Region

AMERICA Buy from Distributor

Farnell Element14

Stock

957

Min.Order

1

Distributor reported inventory date: 2022-05-23

Active
EAR99 NEC Tape And Reel D2PAK -40 150 12
MORE INFO

Output Tolerance (typ):

2

Output Current (A) (nom):

1.5

Unit Price (US$):

0.7568

Country of Origin:

CHINA

L4940D2T5-TR Available at 2 distributors

Distributor availability ofL4940D2T5-TR

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 2030 5 Buy from Distributor
FUTURE WORLDWIDE 165 1 Buy from Distributor

Distributor reported inventory date: 2022-05-23

Distributor Name

RS COMPONENTS

Stock

2030

Min.Order

5

FUTURE

Stock

165

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-05-23

Active
EAR99 NEC Tape And Reel D2PAK -40 150 5
MORE INFO

Output Tolerance (typ):

2

Output Current (A) (nom):

1.5

Unit Price (US$):

0.7568

Country of Origin:

CHINA

L4940V85 Available at 3 distributors

Distributor availability ofL4940V85

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1760 1 Buy from Distributor
RS COMPONENTS EUROPE 985 5 Buy from Distributor
MOUSER WORLDWIDE 993 1 Buy from Distributor

Distributor reported inventory date: 2022-05-23

Distributor Name

DIGIKEY

Stock

1760

Min.Order

1

Region

WORLDWIDE Buy from Distributor

RS COMPONENTS

Stock

985

Min.Order

5

MOUSER

Stock

993

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-05-23

Active
EAR99 NEC Tube TO-220 -40 150 8.5
MORE INFO

Output Tolerance (typ):

2

Output Current (A) (nom):

1.5

Unit Price (US$):

0.8488

Country of Origin:

CHINA

L4940V5

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

Distributor availability ofL4940V5

Distributor Name
Region Stock Min. Order Third party link
COMPEL EUROPE 215 1 Buy from Distributor
RS COMPONENTS EUROPE 839 1 Buy from Distributor
ANGLIA Live EUROPE 1899 1 Buy from Distributor

Distributor reported inventory date: 2022-05-23

Distributor Name

COMPEL

Stock

215

Min.Order

1

RS COMPONENTS

Stock

839

Min.Order

1

ANGLIA Live

Stock

1899

Min.Order

1

Distributor reported inventory date: 2022-05-23

ECCN (EU)

NEC

Packing Type

Tube

Package

TO-220

Operating Temperature (°C)

(min)

-40

(max)

150

Output Voltage (V) (nom)

5

Output Tolerance (typ)

2

Output Current (A) (nom)

1.5

Budgetary Price (US$)* / Qty

Country of Origin

CHINA

L4940D2T12-TR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

Distributor availability ofL4940D2T12-TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2363 1 Buy from Distributor
FUTURE WORLDWIDE 5000 1000 Buy from Distributor
Newark Element14 AMERICA 1 0 Buy from Distributor
Farnell Element14 EUROPE 957 1 Buy from Distributor

Distributor reported inventory date: 2022-05-23

Distributor Name

DIGIKEY

Stock

2363

Min.Order

1

Region

WORLDWIDE Buy from Distributor

FUTURE

Stock

5000

Min.Order

1000

Region

WORLDWIDE Buy from Distributor

Newark Element14

Stock

1

Min.Order

0

Region

AMERICA Buy from Distributor

Farnell Element14

Stock

957

Min.Order

1

Distributor reported inventory date: 2022-05-23

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

D2PAK

Operating Temperature (°C)

(min)

-40

(max)

150

Output Voltage (V) (nom)

12

Output Tolerance (typ)

2

Output Current (A) (nom)

1.5

Budgetary Price (US$)* / Qty

Country of Origin

CHINA

L4940D2T5-TR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

Distributor availability ofL4940D2T5-TR

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 2030 5 Buy from Distributor
FUTURE WORLDWIDE 165 1 Buy from Distributor

Distributor reported inventory date: 2022-05-23

Distributor Name

RS COMPONENTS

Stock

2030

Min.Order

5

FUTURE

Stock

165

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-05-23

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

D2PAK

Operating Temperature (°C)

(min)

-40

(max)

150

Output Voltage (V) (nom)

5

Output Tolerance (typ)

2

Output Current (A) (nom)

1.5

Budgetary Price (US$)* / Qty

Country of Origin

CHINA

L4940V85

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

Distributor availability ofL4940V85

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1760 1 Buy from Distributor
RS COMPONENTS EUROPE 985 5 Buy from Distributor
MOUSER WORLDWIDE 993 1 Buy from Distributor

Distributor reported inventory date: 2022-05-23

Distributor Name

DIGIKEY

Stock

1760

Min.Order

1

Region

WORLDWIDE Buy from Distributor

RS COMPONENTS

Stock

985

Min.Order

5

MOUSER

Stock

993

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-05-23

ECCN (EU)

NEC

Packing Type

Tube

Package

TO-220

Operating Temperature (°C)

(min)

-40

(max)

150

Output Voltage (V) (nom)

8.5

Output Tolerance (typ)

2

Output Current (A) (nom)

1.5

Budgetary Price (US$)* / Qty

Country of Origin

CHINA

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