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  • 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.

    主要特性

    • 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

样片和购买

型号
Package
Packing Type
Output Voltage (V) (nom)
Output Tolerance (typ)
Output Current (A) (nom)
Marketing Status
Budgetary Price (US$)*
Quantity
More info
Order from Distributors
Order from ST
L4940V5 TO-220 Tube 5 2 1.5
Active
0.578 1000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

CHINA

Check Availability

Distributor availability ofL4940V5

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地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 2024 1 Order Now
RS COMPONENTS EUROPE 1957 1 Order Now
AVNET AMERICA 1000 0 Order Now
FUTURE WORLDWIDE 1280 1 Order Now
ARROW EUROPE 18558 0 Order Now
Newark Element14 AMERICA 153 0 Order Now
ARROW AMERICA 65 1000 Order Now
MOUSER WORLDWIDE 3883 1 Order Now
Farnell Element14 EUROPE 1079 1 Order Now
ANGLIA Live EUROPE 163 1 Order Now
RUTRONIK EUROPE 700 50 Order Now

代理商库存报告日期: 2019-05-17

代理商名称

DIGIKEY

库存

2024

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1

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RS COMPONENTS

库存

1957

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1

地区

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AVNET

库存

1000

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0

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FUTURE

库存

1280

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1

地区

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ARROW

库存

18558

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0

地区

EUROPE Order Now

Newark Element14

库存

153

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0

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AMERICA Order Now

ARROW

库存

65

Min.Order

1000

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AMERICA Order Now

MOUSER

库存

3883

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1

地区

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Farnell Element14

库存

1079

Min.Order

1

地区

EUROPE Order Now

ANGLIA Live

库存

163

Min.Order

1

地区

EUROPE Order Now

RUTRONIK

库存

700

Min.Order

50

地区

EUROPE Order Now

代理商库存报告日期: 2019-05-17

Buy direct
L4940D2T12-TR D2PAK Tape And Reel 12 2 1.5
Active
0.497 1000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

CHINA

Check Availability

Distributor availability ofL4940D2T12-TR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 1769 1 Order Now
RS COMPONENTS EUROPE 885 5 Order Now
ARROW EUROPE 4000 0 Order Now
MOUSER WORLDWIDE 2020 1 Order Now

代理商库存报告日期: 2019-05-17

代理商名称

DIGIKEY

库存

1769

Min.Order

1

地区

WORLDWIDE Order Now

RS COMPONENTS

库存

885

Min.Order

5

地区

EUROPE Order Now

ARROW

库存

4000

Min.Order

0

地区

EUROPE Order Now

MOUSER

库存

2020

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-05-17

Buy direct
L4940D2T5-TR D2PAK Tape And Reel 5 2 1.5
Active
0.497 1000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

CHINA

Check Availability

Distributor availability ofL4940D2T5-TR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 7553 1 Order Now
RS COMPONENTS EUROPE 3825 5 Order Now
FUTURE WORLDWIDE 3000 1000 Order Now
ARROW EUROPE 9000 0 Order Now
ARROW AMERICA 36000 1000 Order Now
MOUSER WORLDWIDE 3967 1 Order Now

代理商库存报告日期: 2019-05-17

代理商名称

DIGIKEY

库存

7553

Min.Order

1

地区

WORLDWIDE Order Now

RS COMPONENTS

库存

3825

Min.Order

5

地区

EUROPE Order Now

FUTURE

库存

3000

Min.Order

1000

地区

WORLDWIDE Order Now

ARROW

库存

9000

Min.Order

0

地区

EUROPE Order Now

ARROW

库存

36000

Min.Order

1000

地区

AMERICA Order Now

MOUSER

库存

3967

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-05-17

Buy direct
L4940V85 TO-220 Tube 8.5 2 1.5
Active
0.578 1000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

CHINA

Check Availability

Distributor availability ofL4940V85

代理商名称
地区 库存 最小订购量 Third party link
RS COMPONENTS EUROPE 1340 5 Order Now
ARROW EUROPE 1020 0 Order Now
MOUSER WORLDWIDE 1925 1 Order Now

代理商库存报告日期: 2019-05-17

代理商名称

RS COMPONENTS

库存

1340

Min.Order

5

地区

EUROPE Order Now

ARROW

库存

1020

Min.Order

0

地区

EUROPE Order Now

MOUSER

库存

1925

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-05-17

Buy direct

L4940V5

Package

TO-220

Packing Type

Tube

Unit Price (US$)

0.578*

Distributor availability ofL4940V5

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 2024 1 Order Now
RS COMPONENTS EUROPE 1957 1 Order Now
AVNET AMERICA 1000 0 Order Now
FUTURE WORLDWIDE 1280 1 Order Now
ARROW EUROPE 18558 0 Order Now
Newark Element14 AMERICA 153 0 Order Now
ARROW AMERICA 65 1000 Order Now
MOUSER WORLDWIDE 3883 1 Order Now
Farnell Element14 EUROPE 1079 1 Order Now
ANGLIA Live EUROPE 163 1 Order Now
RUTRONIK EUROPE 700 50 Order Now

代理商库存报告日期: 2019-05-17

代理商名称

DIGIKEY

库存

2024

Min.Order

1

地区

WORLDWIDE Order Now

RS COMPONENTS

库存

1957

Min.Order

1

地区

EUROPE Order Now

AVNET

库存

1000

Min.Order

0

地区

AMERICA Order Now

FUTURE

库存

1280

Min.Order

1

地区

WORLDWIDE Order Now

ARROW

库存

18558

Min.Order

0

地区

EUROPE Order Now

Newark Element14

库存

153

Min.Order

0

地区

AMERICA Order Now

ARROW

库存

65

Min.Order

1000

地区

AMERICA Order Now

MOUSER

库存

3883

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

1079

Min.Order

1

地区

EUROPE Order Now

ANGLIA Live

库存

163

Min.Order

1

地区

EUROPE Order Now

RUTRONIK

库存

700

Min.Order

50

地区

EUROPE Order Now

代理商库存报告日期: 2019-05-17

Output Voltage (V) (nom)

5

Output Tolerance (typ)

2

Output Current (A) (nom)

1.5

Marketing Status

Active

Unit Price (US$)

0.578

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

L4940D2T12-TR

Package

D2PAK

Packing Type

Tape And Reel

Unit Price (US$)

0.497*

Distributor availability ofL4940D2T12-TR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 1769 1 Order Now
RS COMPONENTS EUROPE 885 5 Order Now
ARROW EUROPE 4000 0 Order Now
MOUSER WORLDWIDE 2020 1 Order Now

代理商库存报告日期: 2019-05-17

代理商名称

DIGIKEY

库存

1769

Min.Order

1

地区

WORLDWIDE Order Now

RS COMPONENTS

库存

885

Min.Order

5

地区

EUROPE Order Now

ARROW

库存

4000

Min.Order

0

地区

EUROPE Order Now

MOUSER

库存

2020

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-05-17

Output Voltage (V) (nom)

12

Output Tolerance (typ)

2

Output Current (A) (nom)

1.5

Marketing Status

Active

Unit Price (US$)

0.497

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

L4940D2T5-TR

Package

D2PAK

Packing Type

Tape And Reel

Unit Price (US$)

0.497*

Distributor availability ofL4940D2T5-TR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 7553 1 Order Now
RS COMPONENTS EUROPE 3825 5 Order Now
FUTURE WORLDWIDE 3000 1000 Order Now
ARROW EUROPE 9000 0 Order Now
ARROW AMERICA 36000 1000 Order Now
MOUSER WORLDWIDE 3967 1 Order Now

代理商库存报告日期: 2019-05-17

代理商名称

DIGIKEY

库存

7553

Min.Order

1

地区

WORLDWIDE Order Now

RS COMPONENTS

库存

3825

Min.Order

5

地区

EUROPE Order Now

FUTURE

库存

3000

Min.Order

1000

地区

WORLDWIDE Order Now

ARROW

库存

9000

Min.Order

0

地区

EUROPE Order Now

ARROW

库存

36000

Min.Order

1000

地区

AMERICA Order Now

MOUSER

库存

3967

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-05-17

Output Voltage (V) (nom)

5

Output Tolerance (typ)

2

Output Current (A) (nom)

1.5

Marketing Status

Active

Unit Price (US$)

0.497

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

L4940V85

Package

TO-220

Packing Type

Tube

Unit Price (US$)

0.578*

Distributor availability ofL4940V85

代理商名称
地区 库存 最小订购量 Third party link
RS COMPONENTS EUROPE 1340 5 Order Now
ARROW EUROPE 1020 0 Order Now
MOUSER WORLDWIDE 1925 1 Order Now

代理商库存报告日期: 2019-05-17

代理商名称

RS COMPONENTS

库存

1340

Min.Order

5

地区

EUROPE Order Now

ARROW

库存

1020

Min.Order

0

地区

EUROPE Order Now

MOUSER

库存

1925

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-05-17

Output Voltage (V) (nom)

8.5

Output Tolerance (typ)

2

Output Current (A) (nom)

1.5

Marketing Status

Active

Unit Price (US$)

0.578

Quantity

1000

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

00 Files selected for download

技术文档

    • Description 版本 文档大小 Action
      DS0420
      1.5 A very low drop voltage regulator IC
      14.0
      1.07 MB
      PDF
      DS0420

      1.5 A very low drop voltage regulator IC

出版刊物和宣传资料

    • Description 版本 文档大小 Action
      Linear and Switching Voltage Regulators Selection Guide 3.0
      370.88 KB
      PDF

      Linear and Switching Voltage Regulators Selection Guide

    • Description 版本 文档大小 Action
      电源管理 2017版指南 09.2017
      4.42 MB
      PDF
      Low-dropout (LDO) linear voltage regulators - Quick Reference Guide 2.0
      216.23 KB
      PDF
      Power management for handheld and portable 2.0
      1.09 MB
      PDF

      电源管理 2017版指南

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

      Power management for handheld and portable

型号 Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L4940D2T12-TR
Active
D2PAK 工业 Ecopack2
L4940D2T5-TR
Active
D2PAK 工业 Ecopack2
L4940V5
Active
TO-220 工业 Ecopack1
L4940V85
Active
TO-220 工业 Ecopack1

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

Ecopack1

L4940V85

Package:

TO-220

Material Declaration**:

Marketing Status

Active

Package

TO-220

Grade

Industrial

RoHS Compliance Grade

Ecopack1

(**) 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.