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  • The LD39030SJ is a low noise voltage regulator that provides 300 mA maximum current from an input voltage in the 1.5 V to 5.5 V range, with a typical dropout voltage of 200 mV. It is stabilized with a ceramic capacitor on the output. The ultra low drop voltage, low quiescent current, and low noise features make it suitable for low power battery-powered applications. Power supply rejection is typically 62 dB at low frequencies and starts to roll off at 10 kHz. An enable logic control function puts the LD39030SJ in shutdown mode allowing a total current consumption lower than 1 μA. The device also includes a short-circuit constant current limiting and thermal protection.

    Key Features

    • Input voltage from 1.5 to 5.5 V
    • Ultra low dropout voltage (200 mV typ. at 300 mA load)
    • Very low quiescent current (20 μA typ. at no load, 40 μA typ. at 300 mA load, 1 μA max. in off mode)
    • Very low noise (30 μVRMSfrom 1 kHz to 100 kHz at VOUT= 1.8 V)
    • Output voltage tolerance: ± 2.0 % @ 25 °C
    • 300 mA guaranteed output current
    • Wide range of output voltages available on request: 0.8 V to 4.5 V with 100 mV step
    • Logic-controlled electronic shutdown
    • Compatible with ceramic capacitor COUT = 1 μF
    • Internal current and thermal limit
    • Flip-chip 4 bumps 0.8 x 0.8 mm pitch 0.4 mm
    • Internal soft-start (typ. 100 μs)
    • Temperature range: - 40 °C to 125 °C

Recommended for you

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS7000
      300 mA low quiescent current soft-start, low noise voltage regulator
      5.0
      433.26 KB
      PDF
      DS7000

      300 mA low quiescent current soft-start, low noise 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**
LD39030SJ10R
Active
Flip-Chip 4 Industrial Ecopack2
LD39030SJ12R
Active
Flip-Chip 4 Industrial Ecopack2
LD39030SJ15R
Active
Flip-Chip 4 Industrial Ecopack2
LD39030SJ18R
Active
Flip-Chip 4 Industrial Ecopack2
LD39030SJ25R
Active
Flip-Chip 4 Industrial Ecopack2
LD39030SJ28R
Active
Flip-Chip 4 Industrial Ecopack2
LD39030SJ33R
Active
Flip-Chip 4 Industrial Ecopack2

LD39030SJ10R

Package:

Flip-Chip 4

Material Declaration**:

Marketing Status

Active

Package

Flip-Chip 4

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD39030SJ12R

Package:

Flip-Chip 4

Material Declaration**:

PDF XML

Marketing Status

Active

Package

Flip-Chip 4

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD39030SJ15R

Package:

Flip-Chip 4

Material Declaration**:

PDF XML

Marketing Status

Active

Package

Flip-Chip 4

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD39030SJ18R

Package:

Flip-Chip 4

Material Declaration**:

Marketing Status

Active

Package

Flip-Chip 4

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD39030SJ25R

Package:

Flip-Chip 4

Material Declaration**:

Marketing Status

Active

Package

Flip-Chip 4

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD39030SJ28R

Package:

Flip-Chip 4

Material Declaration**:

Marketing Status

Active

Package

Flip-Chip 4

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD39030SJ33R

Package:

Flip-Chip 4

Material Declaration**:

Marketing Status

Active

Package

Flip-Chip 4

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
LD39030SJ18R Available at 1 distributors

Distributor availability ofLD39030SJ18R

Distributor Name
Region Stock Min. Order Third party link
AVNET AMERICA 5000 0 Order Now

Distributor reported inventory date: 2020-07-09

Distributor Name

AVNET

Stock

5000

Min.Order

0

Region

AMERICA Order Now

Distributor reported inventory date: 2020-07-09

Buy now Flip-Chip 4 Tape And Reel 1.8 2 0.3
Active
EAR99 CHINA 0.625 / 1k
LD39030SJ15R No availability of distributors reported, please contact our sales office Flip-Chip 4 Tape And Reel 1.5 2 0.3
Active
EAR99 CHINA 0.625 / 1k
LD39030SJ12R Available at 1 distributors

Distributor availability ofLD39030SJ12R

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 100 1 Order Now

Distributor reported inventory date: 2020-07-09

Distributor Name

MOUSER

Stock

100

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-07-09

Get sample Flip-Chip 4 Tape And Reel 1.2 2 0.3
Active
EAR99 ITALY 0.625 / 1k
LD39030SJ10R Available at 1 distributors

Distributor availability ofLD39030SJ10R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4680 1 Order Now

Distributor reported inventory date: 2020-07-09

Distributor Name

DIGIKEY

Stock

4680

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-07-09

Get sample Flip-Chip 4 Tape And Reel 1 2 0.3
Active
EAR99 ITALY 0.625 / 1k
LD39030SJ25R Available at 1 distributors

Distributor availability ofLD39030SJ25R

Distributor Name
Region Stock Min. Order Third party link
AVNET AMERICA 5000 0 Order Now

Distributor reported inventory date: 2020-07-09

Distributor Name

AVNET

Stock

5000

Min.Order

0

Region

AMERICA Order Now

Distributor reported inventory date: 2020-07-09

Buy now Flip-Chip 4 Tape And Reel 2.5 2 0.3
Active
EAR99 CHINA 0.625 / 1k
LD39030SJ28R No availability of distributors reported, please contact our sales office Flip-Chip 4 Tape And Reel 2.8 2 0.3
Active
EAR99 CHINA 0.625 / 1k
LD39030SJ33R No availability of distributors reported, please contact our sales office Buy now Flip-Chip 4 Tape And Reel 3.3 2 0.3
Active
EAR99 ITALY 0.625 / 1k

LD39030SJ18R

Package

Flip-Chip 4

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.625 / 1k

Distributor availability ofLD39030SJ18R

Distributor Name
Region Stock Min. Order Third party link
AVNET AMERICA 5000 0 Order Now

Distributor reported inventory date: 2020-07-09

Distributor Name

AVNET

Stock

5000

Min.Order

0

Region

AMERICA Order Now

Distributor reported inventory date: 2020-07-09

Output Voltage (V) (nom)

1.8

Output Tolerance (typ)

2

Output Current (A) (nom)

0.3

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.625 / 1k

ECCN (US)

EAR99

Country of Origin

CHINA

LD39030SJ15R

Package

Flip-Chip 4

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.625 / 1k

Output Voltage (V) (nom)

1.5

Output Tolerance (typ)

2

Output Current (A) (nom)

0.3

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.625 / 1k

ECCN (US)

EAR99

Country of Origin

CHINA

LD39030SJ12R

Package

Flip-Chip 4

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.625 / 1k

Distributor availability ofLD39030SJ12R

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 100 1 Order Now

Distributor reported inventory date: 2020-07-09

Distributor Name

MOUSER

Stock

100

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-07-09

Output Voltage (V) (nom)

1.2

Output Tolerance (typ)

2

Output Current (A) (nom)

0.3

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.625 / 1k

ECCN (US)

EAR99

Country of Origin

ITALY

LD39030SJ10R

Package

Flip-Chip 4

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.625 / 1k

Distributor availability ofLD39030SJ10R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4680 1 Order Now

Distributor reported inventory date: 2020-07-09

Distributor Name

DIGIKEY

Stock

4680

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-07-09

Output Voltage (V) (nom)

1

Output Tolerance (typ)

2

Output Current (A) (nom)

0.3

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.625 / 1k

ECCN (US)

EAR99

Country of Origin

ITALY

LD39030SJ25R

Package

Flip-Chip 4

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.625 / 1k

Distributor availability ofLD39030SJ25R

Distributor Name
Region Stock Min. Order Third party link
AVNET AMERICA 5000 0 Order Now

Distributor reported inventory date: 2020-07-09

Distributor Name

AVNET

Stock

5000

Min.Order

0

Region

AMERICA Order Now

Distributor reported inventory date: 2020-07-09

Output Voltage (V) (nom)

2.5

Output Tolerance (typ)

2

Output Current (A) (nom)

0.3

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.625 / 1k

ECCN (US)

EAR99

Country of Origin

CHINA

LD39030SJ28R

Package

Flip-Chip 4

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.625 / 1k

Output Voltage (V) (nom)

2.8

Output Tolerance (typ)

2

Output Current (A) (nom)

0.3

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.625 / 1k

ECCN (US)

EAR99

Country of Origin

CHINA

LD39030SJ33R

Package

Flip-Chip 4

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.625 / 1k

Output Voltage (V) (nom)

3.3

Output Tolerance (typ)

2

Output Current (A) (nom)

0.3

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.625 / 1k

ECCN (US)

EAR99

Country of Origin

ITALY

(*) 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