Ultra low drop voltage regulators with inhibit low ESR output

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  • The LD2981 is a 100 mA fixed-output voltage regulator. The low-drop voltage and the ultra low quiescent current make them suitable for low noise, low power applications and in battery powered systems.

    The quiescent current in sleep mode is less than 1 μA when INHIBIT pin is pulled low. Shutdown logic control function is available on pin n° 3 (TTL compatible). This means that when the device is used as local regulator, it is possible to put a part of the board in standby, decreasing the total power consumption. The LD2981 is designed to work with low ESR ceramic capacitor. Typical applications are in cellular phone, palmtop/laptop computer, personal digital assistant (PDA), personal stereo, camcorder and camera.

    主要特性

    • Ultra low dropout voltage (0.17 V typ. at 100 mA load, 7 mV typ. at 1 mA load)
    • Very low quiescent current (80 μA typ. at no load in on mode; max 1 μA in off mode)
    • Guaranteed output current up to 100 mA
    • Logic-controlled electronic shutdown
    • Output voltage of 2.5; 3.0; 3.3; 5.0 V
    • Internal current and thermal limit
    • ± 0.75% tolerance output voltage available (A version)
    • Output low noise voltage 160 μVRMS
    • Temperature range: -40 to 125 °C
    • Small package SOT23-5L and SOT-89
    • Fast dynamic response to line and load changes

样片和购买

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Output Voltage (V) (nom)
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LD2981ABU50TR SOT-89 Tape And Reel 5 0.75 0.1
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0.209 10000
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ECCN (US):

EAR99

Country of Origin:

CHINA

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LD2981CM33TR SOT23-5L Tape And Reel 3.3 0.75 0.1
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ECCN (US):

EAR99

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LD2981ABM50TR SOT23-5L Tape And Reel 5 0.75 0.1
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EAR99

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LD2981CM30TR SOT23-5L Tape And Reel 3 0.75 0.1
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ECCN (US):

EAR99

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LD2981ABU33TR SOT-89 Tape And Reel 3.3 0.75 0.1
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ECCN (US):

EAR99

Country of Origin:

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LD2981ABM30TR SOT23-5L Tape And Reel 3 0.75 0.1
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ECCN (US):

EAR99

Country of Origin:

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ECCN (US):

EAR99

Country of Origin:

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LD2981CU50TR SOT-89 Tape And Reel 5 0.75 0.1
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0.166 10000
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ECCN (US):

EAR99

Country of Origin:

CHINA

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LD2981CM50TR SOT23-5L Tape And Reel 5 0.75 0.1
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0.217 10000
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ECCN (US):

EAR99

Country of Origin:

CHINA

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LD2981CU33TR SOT-89 Tape And Reel 3.3 0.75 0.1
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ECCN (US):

EAR99

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CHINA

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LD2981ABU50TR

封装

SOT-89

包装类型

Tape And Reel

Unit Price (US$)

0.209*

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Output Voltage (V) (nom)

5

Output Tolerance (typ)

0.75

Output Current (A) (nom)

0.1

供货状态

Active

Unit Price (US$)

0.209

数量

10000

ECCN (US)

EAR99

Country of Origin

CHINA

LD2981CM33TR

封装

SOT23-5L

包装类型

Tape And Reel

Unit Price (US$)

0.217*

Distributor availability ofLD2981CM33TR

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Output Voltage (V) (nom)

3.3

Output Tolerance (typ)

0.75

Output Current (A) (nom)

0.1

供货状态

Active

Unit Price (US$)

0.217

数量

10000

ECCN (US)

EAR99

Country of Origin

CHINA

LD2981ABM50TR

封装

SOT23-5L

包装类型

Tape And Reel

Unit Price (US$)

0.262*

Distributor availability ofLD2981ABM50TR

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Output Voltage (V) (nom)

5

Output Tolerance (typ)

0.75

Output Current (A) (nom)

0.1

供货状态

Active

Unit Price (US$)

0.262

数量

10000

ECCN (US)

EAR99

Country of Origin

CHINA

LD2981CM30TR

封装

SOT23-5L

包装类型

Tape And Reel

Unit Price (US$)

0.217*

Distributor availability ofLD2981CM30TR

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MOUSER WORLDWIDE 5784 1 Order Now
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5965

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Output Voltage (V) (nom)

3

Output Tolerance (typ)

0.75

Output Current (A) (nom)

0.1

供货状态

Active

Unit Price (US$)

0.217

数量

10000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

LD2981ABU33TR

封装

SOT-89

包装类型

Tape And Reel

Unit Price (US$)

0.209*

Distributor availability ofLD2981ABU33TR

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DIGIKEY WORLDWIDE 23111 1 Order Now
RS COMPONENTS EUROPE 680 10 Order Now
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23111

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680

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10

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35000

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0

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FUTURE

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6995

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52500

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5235

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Output Voltage (V) (nom)

3.3

Output Tolerance (typ)

0.75

Output Current (A) (nom)

0.1

供货状态

Active

Unit Price (US$)

0.209

数量

10000

ECCN (US)

EAR99

Country of Origin

CHINA

LD2981ABM30TR

封装

SOT23-5L

包装类型

Tape And Reel

Unit Price (US$)

0.262*

Distributor availability ofLD2981ABM30TR

代理商名称
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DIGIKEY WORLDWIDE 3000 1 Order Now
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3000

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4610

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156000

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0

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3967

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5

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3000

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Output Voltage (V) (nom)

3

Output Tolerance (typ)

0.75

Output Current (A) (nom)

0.1

供货状态

Active

Unit Price (US$)

0.262

数量

10000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

LD2981ABM33TR

封装

SOT23-5L

包装类型

Tape And Reel

Unit Price (US$)

0.262*

Distributor availability ofLD2981ABM33TR

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DIGIKEY WORLDWIDE 1796 1 Order Now
RS COMPONENTS EUROPE 900 1 Order Now
AVNET AMERICA 15000 0 Order Now
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ARROW AMERICA 20 1 Order Now
MOUSER WORLDWIDE 3700 1 Order Now
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1796

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900

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15000

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0

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9000

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20

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1

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3700

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1

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Farnell Element14

库存

5098

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-09-17

Output Voltage (V) (nom)

3.3

Output Tolerance (typ)

0.75

Output Current (A) (nom)

0.1

供货状态

Active

Unit Price (US$)

0.262

数量

10000

ECCN (US)

EAR99

Country of Origin

CHINA

LD2981CU50TR

封装

SOT-89

包装类型

Tape And Reel

Unit Price (US$)

0.166*

Distributor availability ofLD2981CU50TR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 5994 1 Order Now
RS COMPONENTS EUROPE 2560 5 Order Now
MOUSER WORLDWIDE 7242 1 Order Now
RUTRONIK EUROPE 137500 2500 Order Now

代理商库存报告日期: 2019-09-17

代理商名称

DIGIKEY

库存

5994

Min.Order

1

地区

WORLDWIDE Order Now

RS COMPONENTS

库存

2560

Min.Order

5

地区

EUROPE Order Now

MOUSER

库存

7242

Min.Order

1

地区

WORLDWIDE Order Now

RUTRONIK

库存

137500

Min.Order

2500

地区

EUROPE Order Now

代理商库存报告日期: 2019-09-17

Output Voltage (V) (nom)

5

Output Tolerance (typ)

0.75

Output Current (A) (nom)

0.1

供货状态

Active

Unit Price (US$)

0.166

数量

10000

ECCN (US)

EAR99

Country of Origin

CHINA

LD2981CM50TR

封装

SOT23-5L

包装类型

Tape And Reel

Unit Price (US$)

0.217*

Distributor availability ofLD2981CM50TR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 8460 1 Order Now
RS COMPONENTS EUROPE 6850 1 Order Now
ARROW EUROPE 3000 0 Order Now
MOUSER WORLDWIDE 4421 1 Order Now
Farnell Element14 EUROPE 5725 1 Order Now
RUTRONIK EUROPE 3000 3000 Order Now

代理商库存报告日期: 2019-09-17

代理商名称

DIGIKEY

库存

8460

Min.Order

1

地区

WORLDWIDE Order Now

RS COMPONENTS

库存

6850

Min.Order

1

地区

EUROPE Order Now

ARROW

库存

3000

Min.Order

0

地区

EUROPE Order Now

MOUSER

库存

4421

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

5725

Min.Order

1

地区

EUROPE Order Now

RUTRONIK

库存

3000

Min.Order

3000

地区

EUROPE Order Now

代理商库存报告日期: 2019-09-17

Output Voltage (V) (nom)

5

Output Tolerance (typ)

0.75

Output Current (A) (nom)

0.1

供货状态

Active

Unit Price (US$)

0.217

数量

10000

ECCN (US)

EAR99

Country of Origin

CHINA

LD2981CU33TR

封装

SOT-89

包装类型

Tape And Reel

Unit Price (US$)

0.166*

Distributor availability ofLD2981CU33TR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 14043 1 Order Now
RS COMPONENTS EUROPE 3360 1 Order Now
ARROW EUROPE 2500 0 Order Now
MOUSER WORLDWIDE 18647 1 Order Now

代理商库存报告日期: 2019-09-17

代理商名称

DIGIKEY

库存

14043

Min.Order

1

地区

WORLDWIDE Order Now

RS COMPONENTS

库存

3360

Min.Order

1

地区

EUROPE Order Now

ARROW

库存

2500

Min.Order

0

地区

EUROPE Order Now

MOUSER

库存

18647

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-09-17

Output Voltage (V) (nom)

3.3

Output Tolerance (typ)

0.75

Output Current (A) (nom)

0.1

供货状态

Active

Unit Price (US$)

0.166

数量

10000

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

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产品型号 供货状态 封装 等级规格 符合RoHS级别 材料声明**
LD2981ABM30TR
Active
SOT23-5L 工业 Ecopack2
LD2981ABM33TR
Active
SOT23-5L 工业 Ecopack2
LD2981ABM50TR
Active
SOT23-5L 工业 Ecopack2
LD2981ABU33TR
Active
SOT-89 工业 Ecopack2
LD2981ABU50TR
Active
SOT-89 工业 Ecopack2
LD2981CM30TR
Active
SOT23-5L 工业 Ecopack2
LD2981CM33TR
Active
SOT23-5L 工业 Ecopack2
LD2981CM50TR
Active
SOT23-5L 工业 Ecopack2
LD2981CU33TR
Active
SOT-89 工业 Ecopack2
LD2981CU50TR
Active
SOT-89 工业 Ecopack2

LD2981ABM30TR

Package:

SOT23-5L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT23-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD2981ABM33TR

Package:

SOT23-5L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT23-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD2981ABM50TR

Package:

SOT23-5L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT23-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD2981ABU33TR

Package:

SOT-89

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT-89

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD2981ABU50TR

Package:

SOT-89

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT-89

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD2981CM30TR

Package:

SOT23-5L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT23-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD2981CM33TR

Package:

SOT23-5L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT23-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD2981CM50TR

Package:

SOT23-5L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT23-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD2981CU33TR

Package:

SOT-89

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT-89

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD2981CU50TR

Package:

SOT-89

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT-89

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.