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  • The LD39300 is a fast ultra low drop linear regulator which operates from 2.5 V to 6 V input supply.

    A wide range of output options are available. The low drop voltage, low noise, and low quiescent current make it suitable for low voltage microprocessor and memory applications. The device is developed on a BiCMOS process which allows low quiescent current operation independently of output load current.

    Key Features

    • 3 A guaranteed output current
    • Ultra low dropout voltage (200 mV typ. @ 3 A load, 40 mV typ. @ 600 mA load)
    • Very low quiescent current (1.2 mA typ. @ 3 A load, 1 µA max @ 25 °C in off mode)
    • Logic-controlled electronic shutdown
    • Current and thermal internal limit
    • ± 1.5 % output voltage tolerance @ 25 °C
    • Fixed and ADJ output voltages: 1.22 V, ADJ
    • Temperature range: -40 to 125 °C
    • Fast dynamic response to line and load changes
    • Stable with ceramic capacitor
    • Available in PPAK and DPAK

Sample & Buy

Part Number
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
LD39300DT12-R DPAK Tape And Reel 1.2 1.5 3
Active
0.476 10000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

CHINA

Check Availability

Distributor availability ofLD39300DT12-R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 740 1 Order Now
MOUSER WORLDWIDE 1464 1 Order Now

Distributor reported inventory date: 2019-11-11

Distributor Name

DIGIKEY

Stock

740

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

1464

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-11-11

Buy now
LD39300PT-R PPACK 5 Tape And Reel - 1.5 3
Active
0.596 10000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

CHINA

Check Availability

Distributor availability ofLD39300PT-R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2472 1 Order Now
RS COMPONENTS EUROPE 7005 1 Order Now
ARROW EUROPE 2500 0 Order Now
Newark Element14 AMERICA 1224 0 Order Now
MOUSER WORLDWIDE 19633 1 Order Now
Farnell Element14 EUROPE 4685 1 Order Now

Distributor reported inventory date: 2019-11-11

Distributor Name

DIGIKEY

Stock

2472

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

7005

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

2500

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

1224

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

19633

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

4685

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-11-11

Buy now

LD39300DT12-R

Package

DPAK

Packing Type

Tape And Reel

Unit Price (US$)

0.476*

Distributor availability ofLD39300DT12-R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 740 1 Order Now
MOUSER WORLDWIDE 1464 1 Order Now

Distributor reported inventory date: 2019-11-11

Distributor Name

DIGIKEY

Stock

740

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

1464

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-11-11

Output Voltage (V) (nom)

1.2

Output Tolerance (typ)

1.5

Output Current (A) (nom)

3

Marketing Status

Active

Unit Price (US$)

0.476

Quantity

10000

ECCN (US)

EAR99

Country of Origin

CHINA

LD39300PT-R

Package

PPACK 5

Packing Type

Tape And Reel

Unit Price (US$)

0.596*

Distributor availability ofLD39300PT-R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2472 1 Order Now
RS COMPONENTS EUROPE 7005 1 Order Now
ARROW EUROPE 2500 0 Order Now
Newark Element14 AMERICA 1224 0 Order Now
MOUSER WORLDWIDE 19633 1 Order Now
Farnell Element14 EUROPE 4685 1 Order Now

Distributor reported inventory date: 2019-11-11

Distributor Name

DIGIKEY

Stock

2472

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

7005

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

2500

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

1224

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

19633

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

4685

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-11-11

Output Voltage (V) (nom)

-

Output Tolerance (typ)

1.5

Output Current (A) (nom)

3

Marketing Status

Active

Unit Price (US$)

0.596

Quantity

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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Technical Documentation

    • Description Version Size Action
      DS5086
      Ultra low drop BICMOS voltage regulator
      3.0
      1.42 MB
      PDF
      DS5086

      Ultra low drop BICMOS voltage regulator

Publications and Collaterals

    • Description Version Size Action
      Linear and Switching Voltage Regulators Selection Guide 3.0
      370.88 KB
      PDF

      Linear and Switching Voltage Regulators Selection Guide

    • Description Version Size Action
      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

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

      Power management for handheld and portable

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
LD39300DT12-R
Active
DPAK Industrial Ecopack2
LD39300PT-R
Active
PPACK 5 Industrial Ecopack2

LD39300DT12-R

Package:

DPAK

Material Declaration**:

Marketing Status

Active

Package

DPAK

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD39300PT-R

Package:

PPACK 5

Material Declaration**:

PDF XML

Marketing Status

Active

Package

PPACK 5

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.