L4940

Active
Design Win

1.5 A very low drop voltage regulator IC

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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.

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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
NRND
TO-220 Industrial Ecopack2

L4940D2T12-TR

Package:

D2PAK

Material Declaration**:

PDF XML

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

NRND

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

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Part Number
Order from distributors
Order from ST
Marketing Status
Grade
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Budgetary Price (US$)*/Qty
Output Voltage (V) (nom)
Output Tolerance (typ)
Output Current (A) (nom)
Unit Price (US$)
Country of Origin
min
max
L4940V5 Available at distributors

Distributor availability of L4940V5

Distributor Name
Region Stock Min. Order Third party link

Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
Active
Industrial EAR99 NEC Tube TO-220 -40 150

5

2

1.5

0.8488

CHINA

L4940D2T12-TR Available at distributors

Distributor availability of L4940D2T12-TR

Distributor Name
Region Stock Min. Order Third party link

Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
Active
Industrial EAR99 NEC Tape and Reel D2PAK -40 150

12

2

1.5

0.7568

CHINA

L4940D2T5-TR Available at distributors

Distributor availability of L4940D2T5-TR

Distributor Name
Region Stock Min. Order Third party link

Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
Active
Industrial EAR99 NEC Tape and Reel D2PAK -40 150

5

2

1.5

0.7568

CHINA

L4940V85 Available at distributors

Distributor availability of L4940V85

Distributor Name
Region Stock Min. Order Third party link

Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
NRND
Industrial EAR99 NEC Tube TO-220 -40 150

8.5

2

1.5

0.8488

CHINA

L4940V5 Active

Package:
TO-220
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

L4940V5

Grade:

Industrial

ECCN (EU):

NEC

Packing Type:

Tube

Operating Temperature (°C)

Min:

-40

Max:

150

Output Voltage (V) (nom):

5

Output Tolerance (typ):

2

Output Current (A) (nom):

1.5

Country of Origin:

CHINA

Distributor Name

Distributor reported inventory date:

L4940D2T12-TR Active

Package:
D2PAK
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

L4940D2T12-TR

Grade:

Industrial

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

150

Output Voltage (V) (nom):

12

Output Tolerance (typ):

2

Output Current (A) (nom):

1.5

Country of Origin:

CHINA

Distributor Name

Distributor reported inventory date:

L4940D2T5-TR Active

Package:
D2PAK
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

L4940D2T5-TR

Grade:

Industrial

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

150

Output Voltage (V) (nom):

5

Output Tolerance (typ):

2

Output Current (A) (nom):

1.5

Country of Origin:

CHINA

Distributor Name

Distributor reported inventory date:

L4940V85 NRND

Package:
TO-220
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

L4940V85

Grade:

Industrial

ECCN (EU):

NEC

Packing Type:

Tube

Operating Temperature (°C)

Min:

-40

Max:

150

Output Voltage (V) (nom):

8.5

Output Tolerance (typ):

2

Output Current (A) (nom):

1.5

Country of Origin:

CHINA

Distributor Name

Distributor reported inventory date:

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(*) 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