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  • The LD39050 provides 500 mA maximum current with an input voltage range from 1.5 V to 5.5 V and a typical dropout voltage of 200 mV. Stability is given by ceramic capacitors. The ultra low drop voltage, low quiescent current and low noise features make it suitable for low power batterypowered applications. Power supply rejection is 65 dB at low frequencies and starts to roll off at 10 kHz. The enable logic control function puts the LD39050 in shutdown mode allowing a total current consumption lower than 1 μA. The device also includes short-circuit constant current limiting and thermal protection. Typical applications are mobile phones, hard disks and battery-powered systems.

    Key Features

    • Input voltage from 1.5 to 5.5 V
    • Ultra low-dropout voltage (200 mV typ. at 500 mA load)
    • Very low quiescent current (20 μA typ. at no load, 100 μA typ. at 500 mA load, 1 μA max. in OFF mode)
    • Very low noise without bypass capacitor
    • Output voltage tolerance: ± 2.0% @ 25 °C
    • 500 mA guaranteed output current
    • Wide range of output voltages available on request: 0.8 V to 4.5 V with 100 mV step and adjustable from 0.8 V
    • Logic-controlled electronic shutdown
    • Compatible with ceramic capacitor COUT = 1 μF
    • Internal current and thermal limit
    • Package DFN6 (3x3 mm) and DFN6 (2x2 mm)
    • Temperature range: from -40 °C to 125 °C

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EDA Symbols, Footprints and 3D Models

STMicroelectronics - LD39050

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
LD39050PU25R
Active
DFN6 3x3 Industrial Ecopack2
LD39050PU33R
Active
DFN6 3x3 Industrial Ecopack2
LD39050PUR
Active
DFN6 3x3 Industrial Ecopack2
LD39050PV10R
Active
DFN6 2x2 Industrial Ecopack2
LD39050PVR
Active
DFN6 2x2 Industrial Ecopack2

LD39050PU25R

Package:

DFN6 3x3

Material Declaration**:

XML

Marketing Status

Active

Package

DFN6 3x3

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD39050PU33R

Package:

DFN6 3x3

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DFN6 3x3

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD39050PUR

Package:

DFN6 3x3

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DFN6 3x3

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD39050PV10R

Package:

DFN6 2x2

Material Declaration**:

Marketing Status

Active

Package

DFN6 2x2

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD39050PVR

Package:

DFN6 2x2

Material Declaration**:

Marketing Status

Active

Package

DFN6 2x2

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
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Output Voltage (V) (nom)
Budgetary Price (US$)*/Qty
More info
min
max
LD39050PU25R Available at 3 distributors

Distributor availability ofLD39050PU25R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5572 1 Order Now
AVNET AMERICA 6000 0 Order Now
MOUSER WORLDWIDE 5705 1 Order Now

Distributor reported inventory date: 2020-11-26

Distributor Name

DIGIKEY

Stock

5572

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

6000

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

5705

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-11-26

Free Sample Buy Direct
Active
EAR99 NEC Tape And Reel DFN6 3x3 -40 125 2.5 0.405 / 1k
MORE INFO

Output Tolerance (typ):

2

Output Current (A) (nom):

0.5

Unit Price (US$):

0.405

Country of Origin:

MALAYSIA

LD39050PVR Available at 4 distributors

Distributor availability ofLD39050PVR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1753 1 Order Now
RS COMPONENTS EUROPE 1000 1 Order Now
MOUSER WORLDWIDE 1976 1 Order Now
RUTRONIK EUROPE 10 3000 Order Now

Distributor reported inventory date: 2020-11-26

Distributor Name

DIGIKEY

Stock

1753

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1000

Min.Order

1

Region

EUROPE Order Now

MOUSER

Stock

1976

Min.Order

1

Region

WORLDWIDE Order Now

RUTRONIK

Stock

10

Min.Order

3000

Region

EUROPE Order Now

Distributor reported inventory date: 2020-11-26

Buy Direct
Active
EAR99 NEC Tape And Reel DFN6 2x2 -40 125 - 0.405 / 1k
MORE INFO

Output Tolerance (typ):

2

Output Current (A) (nom):

0.5

Unit Price (US$):

0.405

Country of Origin:

MALAYSIA

LD39050PV10R Available at 1 distributors

Distributor availability ofLD39050PV10R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2939 1 Order Now

Distributor reported inventory date: 2020-11-26

Distributor Name

DIGIKEY

Stock

2939

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-11-26

Buy Direct
Active
EAR99 NEC Tape And Reel DFN6 2x2 -40 125 1 0.405 / 1k
MORE INFO

Output Tolerance (typ):

2

Output Current (A) (nom):

0.5

Unit Price (US$):

0.405

Country of Origin:

MALAYSIA

LD39050PUR Available at 9 distributors

Distributor availability ofLD39050PUR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 18105 1 Order Now
RS COMPONENTS EUROPE 4470 1 Order Now
AVNET AMERICA 9000 0 Order Now
FUTURE WORLDWIDE 3000 3000 Order Now
Newark Element14 AMERICA 1851 0 Order Now
ARROW AMERICA 27000 3000 Order Now
MOUSER WORLDWIDE 27305 1 Order Now
Farnell Element14 EUROPE 3239 1 Order Now
ANGLIA Live EUROPE 2821 1 Order Now

Distributor reported inventory date: 2020-11-26

Distributor Name

DIGIKEY

Stock

18105

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

4470

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

9000

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

3000

Min.Order

3000

Region

WORLDWIDE Order Now

Newark Element14

Stock

1851

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

27000

Min.Order

3000

Region

AMERICA Order Now

MOUSER

Stock

27305

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

3239

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

2821

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-11-26

Free Sample Buy Direct
Active
EAR99 NEC Tape And Reel DFN6 3x3 -40 125 - 0.405 / 1k
MORE INFO

Output Tolerance (typ):

2

Output Current (A) (nom):

0.5

Unit Price (US$):

0.405

Country of Origin:

MALAYSIA

LD39050PU33R Available at 8 distributors

Distributor availability ofLD39050PU33R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 18693 1 Order Now
COMPEL EUROPE 441 1 Order Now
RS COMPONENTS EUROPE 2500 1 Order Now
FUTURE WORLDWIDE 6000 3000 Order Now
ARROW EUROPE 3000 0 Order Now
Newark Element14 AMERICA 546 0 Order Now
MOUSER WORLDWIDE 12457 1 Order Now
Farnell Element14 EUROPE 2148 1 Order Now

Distributor reported inventory date: 2020-11-26

Distributor Name

DIGIKEY

Stock

18693

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

441

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

2500

Min.Order

1

Region

EUROPE Order Now

FUTURE

Stock

6000

Min.Order

3000

Region

WORLDWIDE Order Now

ARROW

Stock

3000

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

546

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

12457

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2148

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-11-26

Free Sample Buy Direct
Active
EAR99 NEC Tape And Reel DFN6 3x3 -40 125 3.3 0.405 / 1k
MORE INFO

Output Tolerance (typ):

2

Output Current (A) (nom):

0.5

Unit Price (US$):

0.405

Country of Origin:

MALAYSIA

LD39050PU25R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.405 / 1k

Distributor availability ofLD39050PU25R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5572 1 Order Now
AVNET AMERICA 6000 0 Order Now
MOUSER WORLDWIDE 5705 1 Order Now

Distributor reported inventory date: 2020-11-26

Distributor Name

DIGIKEY

Stock

5572

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

6000

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

5705

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-11-26

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

DFN6 3x3

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

2.5

Output Tolerance (typ)

2

Output Current (A) (nom)

0.5

Budgetary Price (US$)* / Qty

0.405 / 1k

Country of Origin

MALAYSIA

LD39050PVR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.405 / 1k

Distributor availability ofLD39050PVR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1753 1 Order Now
RS COMPONENTS EUROPE 1000 1 Order Now
MOUSER WORLDWIDE 1976 1 Order Now
RUTRONIK EUROPE 10 3000 Order Now

Distributor reported inventory date: 2020-11-26

Distributor Name

DIGIKEY

Stock

1753

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1000

Min.Order

1

Region

EUROPE Order Now

MOUSER

Stock

1976

Min.Order

1

Region

WORLDWIDE Order Now

RUTRONIK

Stock

10

Min.Order

3000

Region

EUROPE Order Now

Distributor reported inventory date: 2020-11-26

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

DFN6 2x2

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

-

Output Tolerance (typ)

2

Output Current (A) (nom)

0.5

Budgetary Price (US$)* / Qty

0.405 / 1k

Country of Origin

MALAYSIA

LD39050PV10R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.405 / 1k

Distributor availability ofLD39050PV10R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2939 1 Order Now

Distributor reported inventory date: 2020-11-26

Distributor Name

DIGIKEY

Stock

2939

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-11-26

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

DFN6 2x2

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

1

Output Tolerance (typ)

2

Output Current (A) (nom)

0.5

Budgetary Price (US$)* / Qty

0.405 / 1k

Country of Origin

MALAYSIA

LD39050PUR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.405 / 1k

Distributor availability ofLD39050PUR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 18105 1 Order Now
RS COMPONENTS EUROPE 4470 1 Order Now
AVNET AMERICA 9000 0 Order Now
FUTURE WORLDWIDE 3000 3000 Order Now
Newark Element14 AMERICA 1851 0 Order Now
ARROW AMERICA 27000 3000 Order Now
MOUSER WORLDWIDE 27305 1 Order Now
Farnell Element14 EUROPE 3239 1 Order Now
ANGLIA Live EUROPE 2821 1 Order Now

Distributor reported inventory date: 2020-11-26

Distributor Name

DIGIKEY

Stock

18105

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

4470

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

9000

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

3000

Min.Order

3000

Region

WORLDWIDE Order Now

Newark Element14

Stock

1851

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

27000

Min.Order

3000

Region

AMERICA Order Now

MOUSER

Stock

27305

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

3239

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

2821

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-11-26

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

DFN6 3x3

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

-

Output Tolerance (typ)

2

Output Current (A) (nom)

0.5

Budgetary Price (US$)* / Qty

0.405 / 1k

Country of Origin

MALAYSIA

LD39050PU33R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.405 / 1k

Distributor availability ofLD39050PU33R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 18693 1 Order Now
COMPEL EUROPE 441 1 Order Now
RS COMPONENTS EUROPE 2500 1 Order Now
FUTURE WORLDWIDE 6000 3000 Order Now
ARROW EUROPE 3000 0 Order Now
Newark Element14 AMERICA 546 0 Order Now
MOUSER WORLDWIDE 12457 1 Order Now
Farnell Element14 EUROPE 2148 1 Order Now

Distributor reported inventory date: 2020-11-26

Distributor Name

DIGIKEY

Stock

18693

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

441

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

2500

Min.Order

1

Region

EUROPE Order Now

FUTURE

Stock

6000

Min.Order

3000

Region

WORLDWIDE Order Now

ARROW

Stock

3000

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

546

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

12457

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2148

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-11-26

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

DFN6 3x3

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

3.3

Output Tolerance (typ)

2

Output Current (A) (nom)

0.5

Budgetary Price (US$)* / Qty

0.405 / 1k

Country of Origin

MALAYSIA

(*) 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