LD39050

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500 mA low quiescent current and low noise voltage regulator

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Product overview

Description

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.

  • All 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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STMicroelectronics - LD39050

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3D models

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**:

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**:

PDF XML

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

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Part Number
Order from distributors
Order from ST
Marketing Status
Grade
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Budgetary Price (US$)*/Qty
Output Voltage (V) (nom)
Output Tolerance (typ)
Output Current (A) (nom)
Unit Price (US$)
Country of Origin
min
max
LD39050PU25R Available at distributors

Distributor availability of LD39050PU25R

Distributor Name
Region Stock Min. Order Third party link

Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
Active
Industrial EAR99 NEC Tape and Reel DFN6 3x3 -40 125

2.5

2

0.5

0.4602

MALAYSIA

LD39050PVR Available at distributors

Distributor availability of LD39050PVR

Distributor Name
Region Stock Min. Order Third party link

Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
Active
Industrial EAR99 NEC Tape and Reel DFN6 2x2 -40 125

-

2

0.5

0.4602

MALAYSIA

LD39050PV10R Available at distributors

Distributor availability of LD39050PV10R

Distributor Name
Region Stock Min. Order Third party link

Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
Active
Industrial EAR99 NEC Tape and Reel DFN6 2x2 -40 125

1

2

0.5

0.4602

MALAYSIA

LD39050PUR Available at distributors

Distributor availability of LD39050PUR

Distributor Name
Region Stock Min. Order Third party link

Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
Active
Industrial EAR99 NEC Tape and Reel DFN6 3x3 -40 125

-

2

0.5

0.4602

MALAYSIA

LD39050PU33R Available at distributors

Distributor availability of LD39050PU33R

Distributor Name
Region Stock Min. Order Third party link

Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
Active
Industrial EAR99 NEC Tape and Reel DFN6 3x3 -40 125

3.3

2

0.5

0.4602

MALAYSIA

LD39050PU25R Active

Package:
DFN6 3x3
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LD39050PU25R

Grade:

Industrial

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

125

Output Voltage (V) (nom):

2.5

Output Tolerance (typ):

2

Output Current (A) (nom):

0.5

Country of Origin:

MALAYSIA

Distributor Name

Distributor reported inventory date:

LD39050PVR Active

Package:
DFN6 2x2
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LD39050PVR

Grade:

Industrial

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

125

Output Voltage (V) (nom):

-

Output Tolerance (typ):

2

Output Current (A) (nom):

0.5

Country of Origin:

MALAYSIA

Distributor Name

Distributor reported inventory date:

LD39050PV10R Active

Package:
DFN6 2x2
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LD39050PV10R

Grade:

Industrial

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

125

Output Voltage (V) (nom):

1

Output Tolerance (typ):

2

Output Current (A) (nom):

0.5

Country of Origin:

MALAYSIA

Distributor Name

Distributor reported inventory date:

LD39050PUR Active

Package:
DFN6 3x3
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LD39050PUR

Grade:

Industrial

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

125

Output Voltage (V) (nom):

-

Output Tolerance (typ):

2

Output Current (A) (nom):

0.5

Country of Origin:

MALAYSIA

Distributor Name

Distributor reported inventory date:

LD39050PU33R Active

Package:
DFN6 3x3
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LD39050PU33R

Grade:

Industrial

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

125

Output Voltage (V) (nom):

3.3

Output Tolerance (typ):

2

Output Current (A) (nom):

0.5

Country of Origin:

MALAYSIA

Distributor Name

Distributor reported inventory date:

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(*) 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