LD39150
Active
Design Win
Ultra low drop BiCMOS voltage regulator

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Product overview

Description

The LD39150 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 ultra 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.

  • All features

    • 1.5 A guaranteed output current
    • Ultra low dropout voltage (200 mV typ. @ 1.5 A load, 40 mV typ. @ 300 mA load)
    • Very low quiescent current (1 mA typ. @ 1.5 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: 1.8 V, 2.5 V, 3.3 V, ADJ
    • Temperature range: -40 to 125 °C
    • Fast dynamic response to line and load changes
    • Stable with ceramic capacitor
    • Available in PPAK, DPAK and DFN6 (3x3 mm)

EDA Symbols, Footprints and 3D Models

STMicroelectronics - LD39150

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Symbols

Symbols

Footprints

Footprints

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3D models

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Longevity Commitment Longevity Starting Date Material Declaration**
LD39150DT25-R
Active
DPAK Industrial Ecopack2 - -
LD39150DT33-R
Active
DPAK Industrial Ecopack2 - -
LD39150PT-R
Active
PPACK 5 Industrial Ecopack2 - -
LD39150PU-R
Active
DFN6 3x3 Industrial Ecopack2 - -

LD39150DT25-R

Package:

DPAK

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DPAK

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD39150DT33-R

Package:

DPAK

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DPAK

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD39150PT-R

Package:

PPACK 5

Material Declaration**:

PDF XML

Marketing Status

Active

Package

PPACK 5

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD39150PU-R

Package:

DFN6 3x3

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DFN6 3x3

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

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Budgetary Price (US$)*/Qty
Grade
Output Voltage (V) (nom)
Output Tolerance (typ)
Output Current (A) (nom)
min
max
LD39150DT33-R Available at 2 distributors

Distributor availability ofLD39150DT33-R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 17080 1 Buy from Distributor
MOUSER WORLDWIDE 25698 1 Buy from Distributor

Distributor reported inventory date: 2026-10-25

Distributor Name

DIGIKEY

Stock

17080

Min.Order

1

Region

WORLDWIDE Buy from Distributor

MOUSER

Stock

25698

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2026-10-25

Active
DPAK Tape and Reel SINGAPORE EAR99 NEC -40 125

Industrial

3.3

1.5

1.5

LD39150DT25-R Available at 4 distributors

Distributor availability ofLD39150DT25-R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 8365 1 Buy from Distributor
MOUSER WORLDWIDE 11064 1 Buy from Distributor
Farnell Element14 EUROPE 3793 1 Buy from Distributor
ANGLIA Live EUROPE 5000 1 Buy from Distributor

Distributor reported inventory date: 2026-10-25

Distributor Name

DIGIKEY

Stock

8365

Min.Order

1

Region

WORLDWIDE Buy from Distributor

MOUSER

Stock

11064

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

3793

Min.Order

1

ANGLIA Live

Stock

5000

Min.Order

1

Distributor reported inventory date: 2026-10-25

Active
DPAK Tape and Reel SINGAPORE EAR99 NEC -40 125

Industrial

2.5

1.5

1.5

LD39150PT-R Available at 6 distributors

Distributor availability ofLD39150PT-R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4751 1 Buy from Distributor
AVNET AMERICA 5000 0 Buy from Distributor
Newark Element14 AMERICA 465 0 Buy from Distributor
MOUSER WORLDWIDE 5153 1 Buy from Distributor
Farnell Element14 EUROPE 3013 1 Buy from Distributor
ANGLIA Live EUROPE 4945 1 Buy from Distributor

Distributor reported inventory date: 2026-10-25

Distributor Name

DIGIKEY

Stock

4751

Min.Order

1

Region

WORLDWIDE Buy from Distributor

AVNET

Stock

5000

Min.Order

0

Region

AMERICA Buy from Distributor

Newark Element14

Stock

465

Min.Order

0

Region

AMERICA Buy from Distributor

MOUSER

Stock

5153

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

3013

Min.Order

1

ANGLIA Live

Stock

4945

Min.Order

1

Distributor reported inventory date: 2026-10-25

Active
PPACK 5 Tape and Reel SINGAPORE EAR99 NEC -40 125

Industrial

-

1.5

1.5

LD39150PU-R Available at 4 distributors

Distributor availability ofLD39150PU-R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2225 1 Buy from Distributor
MOUSER WORLDWIDE 3387 1 Buy from Distributor
Farnell Element14 EUROPE 11014 1 Buy from Distributor
ANGLIA Live EUROPE 6000 1 Buy from Distributor

Distributor reported inventory date: 2026-10-25

Distributor Name

DIGIKEY

Stock

2225

Min.Order

1

Region

WORLDWIDE Buy from Distributor

MOUSER

Stock

3387

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

11014

Min.Order

1

ANGLIA Live

Stock

6000

Min.Order

1

Distributor reported inventory date: 2026-10-25

Active
DFN6 3x3 Tape and Reel SINGAPORE EAR99 NEC -40 125

Industrial

-

1.5

1.5

LD39150DT33-R Active

Part Number:

LD39150DT33-R

Packing Type:

Tape and Reel

RoHS:

Country of Origin:

SINGAPORE

ECCN (EU):

NEC

Operating Temperature (°C)

Min:

-40

Max:

125

Distributor availability ofLD39150DT33-R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 17080 1 Buy from Distributor
MOUSER WORLDWIDE 25698 1 Buy from Distributor

Distributor reported inventory date: 2026-10-25

Distributor Name

DIGIKEY

Stock

17080

Min.Order

1

Region

WORLDWIDE Buy from Distributor

MOUSER

Stock

25698

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2026-10-25

LD39150DT25-R Active

Part Number:

LD39150DT25-R

Packing Type:

Tape and Reel

RoHS:

Country of Origin:

SINGAPORE

ECCN (EU):

NEC

Operating Temperature (°C)

Min:

-40

Max:

125

Distributor availability ofLD39150DT25-R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 8365 1 Buy from Distributor
MOUSER WORLDWIDE 11064 1 Buy from Distributor
Farnell Element14 EUROPE 3793 1 Buy from Distributor
ANGLIA Live EUROPE 5000 1 Buy from Distributor

Distributor reported inventory date: 2026-10-25

Distributor Name

DIGIKEY

Stock

8365

Min.Order

1

Region

WORLDWIDE Buy from Distributor

MOUSER

Stock

11064

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

3793

Min.Order

1

ANGLIA Live

Stock

5000

Min.Order

1

Distributor reported inventory date: 2026-10-25

LD39150PT-R Active

Part Number:

LD39150PT-R

Packing Type:

Tape and Reel

RoHS:

Country of Origin:

SINGAPORE

ECCN (EU):

NEC

Operating Temperature (°C)

Min:

-40

Max:

125

Distributor availability ofLD39150PT-R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4751 1 Buy from Distributor
AVNET AMERICA 5000 0 Buy from Distributor
Newark Element14 AMERICA 465 0 Buy from Distributor
MOUSER WORLDWIDE 5153 1 Buy from Distributor
Farnell Element14 EUROPE 3013 1 Buy from Distributor
ANGLIA Live EUROPE 4945 1 Buy from Distributor

Distributor reported inventory date: 2026-10-25

Distributor Name

DIGIKEY

Stock

4751

Min.Order

1

Region

WORLDWIDE Buy from Distributor

AVNET

Stock

5000

Min.Order

0

Region

AMERICA Buy from Distributor

Newark Element14

Stock

465

Min.Order

0

Region

AMERICA Buy from Distributor

MOUSER

Stock

5153

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

3013

Min.Order

1

ANGLIA Live

Stock

4945

Min.Order

1

Distributor reported inventory date: 2026-10-25

LD39150PU-R Active

Part Number:

LD39150PU-R

Packing Type:

Tape and Reel

RoHS:

Country of Origin:

SINGAPORE

ECCN (EU):

NEC

Operating Temperature (°C)

Min:

-40

Max:

125

Distributor availability ofLD39150PU-R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2225 1 Buy from Distributor
MOUSER WORLDWIDE 3387 1 Buy from Distributor
Farnell Element14 EUROPE 11014 1 Buy from Distributor
ANGLIA Live EUROPE 6000 1 Buy from Distributor

Distributor reported inventory date: 2026-10-25

Distributor Name

DIGIKEY

Stock

2225

Min.Order

1

Region

WORLDWIDE Buy from Distributor

MOUSER

Stock

3387

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

11014

Min.Order

1

ANGLIA Live

Stock

6000

Min.Order

1

Distributor reported inventory date: 2026-10-25

Swipe or click the button to explore more details Don't show this again

(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors