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.

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**:

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

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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
Active
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 Active

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