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

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LD2981ABU50TR SOT-89 Tape And Reel 5 0.75 0.1
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0.209 1000
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LD2981CM33TR SOT23-5L Tape And Reel 3.3 0.75 0.1
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LD2981CM30TR SOT23-5L Tape And Reel 3 0.75 0.1
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LD2981ABU50TR

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SOT-89

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Tape And Reel

Unit Price (US$)

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Output Voltage (V) (nom)

5

Output Tolerance (typ)

0.75

Output Current (A) (nom)

0.1

Marketing Status

Active

Unit Price (US$)

0.209

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

LD2981CM33TR

Package

SOT23-5L

Packing Type

Tape And Reel

Unit Price (US$)

0.217*

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Output Voltage (V) (nom)

3.3

Output Tolerance (typ)

0.75

Output Current (A) (nom)

0.1

Marketing Status

Active

Unit Price (US$)

0.217

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

LD2981ABM50TR

Package

SOT23-5L

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Tape And Reel

Unit Price (US$)

0.262*

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Output Voltage (V) (nom)

5

Output Tolerance (typ)

0.75

Output Current (A) (nom)

0.1

Marketing Status

Active

Unit Price (US$)

0.262

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

LD2981CM30TR

Package

SOT23-5L

Packing Type

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0.217*

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Output Voltage (V) (nom)

3

Output Tolerance (typ)

0.75

Output Current (A) (nom)

0.1

Marketing Status

Active

Unit Price (US$)

0.217

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

LD2981ABU33TR

Package

SOT-89

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Output Voltage (V) (nom)

3.3

Output Tolerance (typ)

0.75

Output Current (A) (nom)

0.1

Marketing Status

Active

Unit Price (US$)

0.209

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

LD2981ABM30TR

Package

SOT23-5L

Packing Type

Tape And Reel

Unit Price (US$)

0.262*

Distributor availability ofLD2981ABM30TR

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105000

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5

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Output Voltage (V) (nom)

3

Output Tolerance (typ)

0.75

Output Current (A) (nom)

0.1

Marketing Status

Active

Unit Price (US$)

0.262

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

LD2981ABM33TR

Package

SOT23-5L

Packing Type

Tape And Reel

Unit Price (US$)

0.262*

Distributor availability ofLD2981ABM33TR

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DIGIKEY WORLDWIDE 1857 1 Order Now
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1070

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1

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15000

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0

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3725

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Output Voltage (V) (nom)

3.3

Output Tolerance (typ)

0.75

Output Current (A) (nom)

0.1

Marketing Status

Active

Unit Price (US$)

0.262

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

LD2981CU50TR

Package

SOT-89

Packing Type

Tape And Reel

Unit Price (US$)

0.166*

Distributor availability ofLD2981CU50TR

代理商名称
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DIGIKEY WORLDWIDE 6029 1 Order Now
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67500

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Output Voltage (V) (nom)

5

Output Tolerance (typ)

0.75

Output Current (A) (nom)

0.1

Marketing Status

Active

Unit Price (US$)

0.166

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

LD2981CM50TR

Package

SOT23-5L

Packing Type

Tape And Reel

Unit Price (US$)

0.217*

Distributor availability ofLD2981CM50TR

代理商名称
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DIGIKEY WORLDWIDE 8478 1 Order Now
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代理商库存报告日期: 2019-05-21

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8478

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6860

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地区

EUROPE Order Now

代理商库存报告日期: 2019-05-21

Output Voltage (V) (nom)

5

Output Tolerance (typ)

0.75

Output Current (A) (nom)

0.1

Marketing Status

Active

Unit Price (US$)

0.217

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

LD2981CU33TR

Package

SOT-89

Packing Type

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 15198 1 Order Now
RS COMPONENTS EUROPE 935 1 Order Now
ARROW EUROPE 5000 0 Order Now
MOUSER WORLDWIDE 20967 1 Order Now

代理商库存报告日期: 2019-05-21

代理商名称

DIGIKEY

库存

15198

Min.Order

1

地区

WORLDWIDE Order Now

RS COMPONENTS

库存

935

Min.Order

1

地区

EUROPE Order Now

ARROW

库存

5000

Min.Order

0

地区

EUROPE Order Now

MOUSER

库存

20967

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-05-21

Output Voltage (V) (nom)

3.3

Output Tolerance (typ)

0.75

Output Current (A) (nom)

0.1

Marketing Status

Active

Unit Price (US$)

0.166

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

相关应用

智能农业

00 Files selected for download

技术文档

    • Description 版本 文档大小 Action
      DS1528
      Ultra low-drop voltage regulators with inhibit
      17.0
      1 MB
      PDF
      DS1528

      Ultra low-drop voltage regulators with inhibit

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**
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.