LD39100

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Education

1 A low quiescent current low noise voltage regulator

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Product overview

Description

The LD39100 provides 1 A maximum current with an input voltage range from 1.5 V to 5.5 V and a typical dropout voltage of 200 mV. The device is stable with ceramic capacitors on the input and output. The ultra-low dropout voltage, low quiescent current and low-noise features make it suitable for low power battery-powered applications. Power supply rejection is 70 dB at low frequency and starts to roll off at 10 kHz.
Enable logic control function puts the LD39100 in shutdown mode, allowing a total current consumption lower than 1 µA. The device also includes short-circuit constant current limiting and thermal protection.
LD39100 is available also in AEC-Q100 qualified version, in the DFN6 (3x3 mm) with wettable flank package.
  • All features

    • AEC-Q100 qualified
    • Input voltage from 1.5 to 5.5 V
    • Ultra-low dropout voltage (200 mV typ. at 1 A load)
    • Very low quiescent current (20 µA typ. at no load, 200 µA typ. at 1 A load, 1 µA max. in off mode)
    • Very low-noise with no bypass capacitor (30 µ VRMS at VOUT = 0.8 V)
    • Output voltage tolerance: ±2.0% at 25 °C
    • 1 A 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 
    • Logic-controlled electronic shutdown
    • Stable with ceramic capacitors COUT = 1 µF
    • Internal current and thermal limit
    • DFN6 (3x3 mm) package
    • Temperature range: -40 °C to 125 °C

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
LD39100PU12R
Active
DFN6 3x3 Industrial Ecopack2
LD39100PU12RY
Active
DFN6 3x3 Automotive Ecopack2
LD39100PU18RY
Active
DFN6 3x3 Automotive Ecopack2
LD39100PU25RY
Active
DFN6 3x3 Automotive Ecopack2
LD39100PU33R
Active
DFN6 3x3 Industrial Ecopack2
LD39100PU33RY
Active
DFN6 3x3 Automotive Ecopack2
LD39100PUR
Active
DFN6 3x3 Industrial Ecopack2
LD39100PURY
Active
DFN6 3x3 Automotive Ecopack2

LD39100PU12R

Package:

DFN6 3x3

Material Declaration**:

Marketing Status

Active

Package

DFN6 3x3

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD39100PU12RY

Package:

DFN6 3x3

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DFN6 3x3

Grade

Automotive

RoHS Compliance Grade

Ecopack2

LD39100PU18RY

Package:

DFN6 3x3

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DFN6 3x3

Grade

Automotive

RoHS Compliance Grade

Ecopack2

LD39100PU25RY

Package:

DFN6 3x3

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DFN6 3x3

Grade

Automotive

RoHS Compliance Grade

Ecopack2

LD39100PU33R

Package:

DFN6 3x3

Material Declaration**:

Marketing Status

Active

Package

DFN6 3x3

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD39100PU33RY

Package:

DFN6 3x3

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DFN6 3x3

Grade

Automotive

RoHS Compliance Grade

Ecopack2

LD39100PUR

Package:

DFN6 3x3

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DFN6 3x3

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD39100PURY

Package:

DFN6 3x3

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DFN6 3x3

Grade

Automotive

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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min
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LD39100PU12R Available at 4 distributors

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DIGIKEY WORLDWIDE 2944 1 Order Now
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EAR99 NEC Tape And Reel DFN6 3x3 -40 125 1.2 0.6 / 1k
MORE INFO

Output Tolerance (typ):

2

Output Current (A) (nom):

1

Unit Price (US$):

0.6

Country of Origin:

MALAYSIA

LD39100PURY Available at 3 distributors

Distributor availability ofLD39100PURY

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DIGIKEY WORLDWIDE 11074 1 Order Now
MOUSER WORLDWIDE 13807 1 Order Now
Farnell Element14 EUROPE 2488 1 Order Now

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DIGIKEY

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11074

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1

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13807

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2488

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1

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EAR99 NEC Tape And Reel DFN6 3x3 -40 125 - 0.8 / 1k
MORE INFO

Output Tolerance (typ):

2

Output Current (A) (nom):

1

Unit Price (US$):

0.8

Country of Origin:

THAILAND

LD39100PU33RY Available at 3 distributors

Distributor availability ofLD39100PU33RY

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3959 1 Order Now
MOUSER WORLDWIDE 6807 1 Order Now
Farnell Element14 EUROPE 1640 1 Order Now

Distributor reported inventory date: 2021-04-16

Distributor Name

DIGIKEY

Stock

3959

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

6807

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1

Region

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Farnell Element14

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1640

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-04-16

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EAR99 NEC Tape And Reel DFN6 3x3 -40 125 3.3 0.8 / 1k
MORE INFO

Output Tolerance (typ):

2

Output Current (A) (nom):

1

Unit Price (US$):

0.8

Country of Origin:

THAILAND

LD39100PU25RY Available at 3 distributors

Distributor availability ofLD39100PU25RY

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2705 1 Order Now
AVNET AMERICA 1000 0 Order Now
FUTURE WORLDWIDE 2000 1 Order Now

Distributor reported inventory date: 2021-04-16

Distributor Name

DIGIKEY

Stock

2705

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

1000

Min.Order

0

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AMERICA Order Now

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Stock

2000

Min.Order

1

Region

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Distributor reported inventory date: 2021-04-16

Active
EAR99 NEC Tape And Reel DFN6 3x3 -40 125 2.5 0.8 / 1k
MORE INFO

Output Tolerance (typ):

2

Output Current (A) (nom):

1

Unit Price (US$):

0.8

Country of Origin:

THAILAND

LD39100PU18RY Available at 4 distributors

Distributor availability ofLD39100PU18RY

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2751 1 Order Now
RS COMPONENTS EUROPE 20 1 Order Now
AVNET AMERICA 240 0 Order Now
MOUSER WORLDWIDE 5034 1 Order Now

Distributor reported inventory date: 2021-04-16

Distributor Name

DIGIKEY

Stock

2751

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

20

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

240

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

5034

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2021-04-16

Free Sample Buy Direct
Active
EAR99 NEC Tape And Reel DFN6 3x3 -40 125 1.8 0.8 / 1k
MORE INFO

Output Tolerance (typ):

2

Output Current (A) (nom):

1

Unit Price (US$):

0.8

Country of Origin:

THAILAND

LD39100PU12RY Available at 2 distributors

Distributor availability ofLD39100PU12RY

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6051 1 Order Now
MOUSER WORLDWIDE 2880 1 Order Now

Distributor reported inventory date: 2021-04-16

Distributor Name

DIGIKEY

Stock

6051

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

2880

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2021-04-16

Free Sample Buy Direct
Active
EAR99 NEC Tape And Reel DFN6 3x3 -40 125 1.2 0.8 / 1k
MORE INFO

Output Tolerance (typ):

2

Output Current (A) (nom):

1

Unit Price (US$):

0.8

Country of Origin:

THAILAND

LD39100PUR Available at 5 distributors

Distributor availability ofLD39100PUR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 58494 1 Order Now
RS COMPONENTS EUROPE 2640 1 Order Now
Newark Element14 AMERICA 74 0 Order Now
MOUSER WORLDWIDE 18331 1 Order Now
Farnell Element14 EUROPE 1381 1 Order Now

Distributor reported inventory date: 2021-04-16

Distributor Name

DIGIKEY

Stock

58494

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2640

Min.Order

1

Region

EUROPE Order Now

Newark Element14

Stock

74

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

18331

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1381

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-04-16

Free Sample Buy Direct
Active
EAR99 NEC Tape And Reel DFN6 3x3 -40 125 - 0.6 / 1k
MORE INFO

Output Tolerance (typ):

2

Output Current (A) (nom):

1

Unit Price (US$):

0.6

Country of Origin:

MALAYSIA

LD39100PU33R Available at 5 distributors

Distributor availability ofLD39100PU33R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 12877 1 Order Now
AVNET AMERICA 244 0 Order Now
Newark Element14 AMERICA 207 0 Order Now
MOUSER WORLDWIDE 5296 1 Order Now
Farnell Element14 EUROPE 2525 1 Order Now

Distributor reported inventory date: 2021-04-16

Distributor Name

DIGIKEY

Stock

12877

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

244

Min.Order

0

Region

AMERICA Order Now

Newark Element14

Stock

207

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

5296

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2525

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-04-16

Free Sample Buy Direct
Active
EAR99 NEC Tape And Reel DFN6 3x3 -40 125 3.3 0.6 / 1k
MORE INFO

Output Tolerance (typ):

2

Output Current (A) (nom):

1

Unit Price (US$):

0.6

Country of Origin:

MALAYSIA

LD39100PU12R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.6 / 1k

Distributor availability ofLD39100PU12R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2944 1 Order Now
AVNET AMERICA 250 0 Order Now
MOUSER WORLDWIDE 2898 1 Order Now
Farnell Element14 EUROPE 2051 1 Order Now

Distributor reported inventory date: 2021-04-16

Distributor Name

DIGIKEY

Stock

2944

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

250

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

2898

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2051

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-04-16

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

DFN6 3x3

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

1.2

Output Tolerance (typ)

2

Output Current (A) (nom)

1

Budgetary Price (US$)* / Qty

0.6 / 1k

Country of Origin

MALAYSIA

LD39100PURY

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.8 / 1k

Distributor availability ofLD39100PURY

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 11074 1 Order Now
MOUSER WORLDWIDE 13807 1 Order Now
Farnell Element14 EUROPE 2488 1 Order Now

Distributor reported inventory date: 2021-04-16

Distributor Name

DIGIKEY

Stock

11074

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

13807

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2488

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-04-16

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)

1

Budgetary Price (US$)* / Qty

0.8 / 1k

Country of Origin

THAILAND

LD39100PU33RY

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.8 / 1k

Distributor availability ofLD39100PU33RY

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3959 1 Order Now
MOUSER WORLDWIDE 6807 1 Order Now
Farnell Element14 EUROPE 1640 1 Order Now

Distributor reported inventory date: 2021-04-16

Distributor Name

DIGIKEY

Stock

3959

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

6807

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1640

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-04-16

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)

1

Budgetary Price (US$)* / Qty

0.8 / 1k

Country of Origin

THAILAND

LD39100PU25RY

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.8 / 1k

Distributor availability ofLD39100PU25RY

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2705 1 Order Now
AVNET AMERICA 1000 0 Order Now
FUTURE WORLDWIDE 2000 1 Order Now

Distributor reported inventory date: 2021-04-16

Distributor Name

DIGIKEY

Stock

2705

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

1000

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

2000

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2021-04-16

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)

1

Budgetary Price (US$)* / Qty

0.8 / 1k

Country of Origin

THAILAND

LD39100PU18RY

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.8 / 1k

Distributor availability ofLD39100PU18RY

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2751 1 Order Now
RS COMPONENTS EUROPE 20 1 Order Now
AVNET AMERICA 240 0 Order Now
MOUSER WORLDWIDE 5034 1 Order Now

Distributor reported inventory date: 2021-04-16

Distributor Name

DIGIKEY

Stock

2751

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

20

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

240

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

5034

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2021-04-16

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

DFN6 3x3

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

1.8

Output Tolerance (typ)

2

Output Current (A) (nom)

1

Budgetary Price (US$)* / Qty

0.8 / 1k

Country of Origin

THAILAND

LD39100PU12RY

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.8 / 1k

Distributor availability ofLD39100PU12RY

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6051 1 Order Now
MOUSER WORLDWIDE 2880 1 Order Now

Distributor reported inventory date: 2021-04-16

Distributor Name

DIGIKEY

Stock

6051

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

2880

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2021-04-16

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

DFN6 3x3

Operating Temperature (°C)

(min)

-40

(max)

125

Output Voltage (V) (nom)

1.2

Output Tolerance (typ)

2

Output Current (A) (nom)

1

Budgetary Price (US$)* / Qty

0.8 / 1k

Country of Origin

THAILAND

LD39100PUR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.6 / 1k

Distributor availability ofLD39100PUR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 58494 1 Order Now
RS COMPONENTS EUROPE 2640 1 Order Now
Newark Element14 AMERICA 74 0 Order Now
MOUSER WORLDWIDE 18331 1 Order Now
Farnell Element14 EUROPE 1381 1 Order Now

Distributor reported inventory date: 2021-04-16

Distributor Name

DIGIKEY

Stock

58494

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2640

Min.Order

1

Region

EUROPE Order Now

Newark Element14

Stock

74

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

18331

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1381

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-04-16

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)

1

Budgetary Price (US$)* / Qty

0.6 / 1k

Country of Origin

MALAYSIA

LD39100PU33R

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.6 / 1k

Distributor availability ofLD39100PU33R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 12877 1 Order Now
AVNET AMERICA 244 0 Order Now
Newark Element14 AMERICA 207 0 Order Now
MOUSER WORLDWIDE 5296 1 Order Now
Farnell Element14 EUROPE 2525 1 Order Now

Distributor reported inventory date: 2021-04-16

Distributor Name

DIGIKEY

Stock

12877

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

244

Min.Order

0

Region

AMERICA Order Now

Newark Element14

Stock

207

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

5296

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2525

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-04-16

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)

1

Budgetary Price (US$)* / Qty

0.6 / 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