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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

Recommended for you

00 Files selected for download

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 2.1
      1.78 MB
      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

Quality and Reliability

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

LD39300DT12-R

Package:

DPAK

Material Declaration**:

Marketing Status

NRND

Package

DPAK

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD39300PT-R

Package:

PPACK 5

Material Declaration**:

PDF XML

Marketing Status

NRND

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.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Package
Packing Type
Output Voltage (V) (nom)
Output Tolerance (typ)
Output Current (A) (nom)
Marketing Status
ECCN (US)
Country of Origin
Budgetary Price (US$)*/Qty
LD39300DT12-R Available at 1 distributors

Distributor availability ofLD39300DT12-R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 735 1 Order Now

Distributor reported inventory date: 2020-06-29

Distributor Name

DIGIKEY

Stock

735

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-06-29

Buy now DPAK Tape And Reel 1.2 1.5 3
NRND
EAR99 CHINA 0.476 / 1k
LD39300PT-R Available at 8 distributors

Distributor availability ofLD39300PT-R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1327 1 Order Now
COMPEL EUROPE 1 1 Order Now
RS COMPONENTS EUROPE 6765 1 Order Now
ARROW EUROPE 2500 0 Order Now
Newark Element14 AMERICA 550 0 Order Now
ARROW AMERICA 20000 2500 Order Now
MOUSER WORLDWIDE 18663 1 Order Now
Farnell Element14 EUROPE 2982 1 Order Now

Distributor reported inventory date: 2020-06-29

Distributor Name

DIGIKEY

Stock

1327

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

1

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

6765

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

2500

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

550

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

20000

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

18663

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2982

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-06-29

Buy now PPACK 5 Tape And Reel - 1.5 3
NRND
EAR99 CHINA 0.596 / 1k

LD39300DT12-R

Package

DPAK

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.476 / 1k

Distributor availability ofLD39300DT12-R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 735 1 Order Now

Distributor reported inventory date: 2020-06-29

Distributor Name

DIGIKEY

Stock

735

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-06-29

Output Voltage (V) (nom)

1.2

Output Tolerance (typ)

1.5

Output Current (A) (nom)

3

Marketing Status

NRND

Budgetary Price (US$)* / Qty

0.476 / 1k

ECCN (US)

EAR99

Country of Origin

CHINA

LD39300PT-R

Package

PPACK 5

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.596 / 1k

Distributor availability ofLD39300PT-R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1327 1 Order Now
COMPEL EUROPE 1 1 Order Now
RS COMPONENTS EUROPE 6765 1 Order Now
ARROW EUROPE 2500 0 Order Now
Newark Element14 AMERICA 550 0 Order Now
ARROW AMERICA 20000 2500 Order Now
MOUSER WORLDWIDE 18663 1 Order Now
Farnell Element14 EUROPE 2982 1 Order Now

Distributor reported inventory date: 2020-06-29

Distributor Name

DIGIKEY

Stock

1327

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

1

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

6765

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

2500

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

550

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

20000

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

18663

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2982

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-06-29

Output Voltage (V) (nom)

-

Output Tolerance (typ)

1.5

Output Current (A) (nom)

3

Marketing Status

NRND

Budgetary Price (US$)* / Qty

0.596 / 1k

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