400 mA, 38 V low-dropout regulator, with 45µA quiescent current

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  • The LDO40L is a 400 mA LDO regulator, designed for being used in severe automotive environments.

    Low quiescent current makes it suitable for applications permanently connected to battery. This feature is especially critical when electronic modules remain in active mode when ignition is off.
    The LDO40L embeds protection functions, such as: current limit and thermal shutdown.
    The extended input voltage range, low drop voltage and low quiescent current features make it suitable also for low power industrial and consumer applications.

    Key Features

    • Low quiescent current: typ. 45 µA at no load
    • Wide input voltage operating range up to 38 V
    • Low startup voltage: 3.5 V
    • Output current up to 400 mA
    • Output voltage options: Adj from 2.5 V and fixed, 3.0, 3.3, 5.0 and 8.5 V
    • Output voltage accuracy:
      • ± 1% typ. @ 25 °C
      • ± 3% (including line, load and temperature variation)
    • Ultra low-dropout:
      • 36 mV @ 100 mA load current
      • 140 mV @ 400 mA load current
    • High PSRR: 70 dB @ 1 kHz
    • Very low noise: 20 µVRMS/VOUT
    • Protection features: current limitation, thermal shutdown
    • -40 °C to +125 °C operating temperature range
    • Package: DFN6 (3x3) (wettable flanks)
    • AEC-Q100 qualified (grade 1)

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Part Number
Package
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Output Voltage (V) (nom)
Output Tolerance (typ)
Output Current (A) (nom)
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LDO40LPU33RY DFN6 3x3 Tape And Reel 3.3 1 0.4
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0.62 1000
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ECCN (US):

EAR99

Country of Origin:

-

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Distributor reported inventory date: 2019-05-20

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LDO40LPU50RY DFN6 3x3 Tape And Reel 5 1 0.4
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0.62 1000
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ECCN (US):

EAR99

Country of Origin:

-

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LDO40LPURY DFN6 3x3 Tape And Reel - 1 0.4
Active
0.62 1000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

THAILAND

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DIGIKEY WORLDWIDE 2501 1 Order Now
ARROW EUROPE 3000 0 Order Now
MOUSER WORLDWIDE 1471 1 Order Now
Farnell Element14 EUROPE 102 1 Order Now
RUTRONIK EUROPE 200 3000 Order Now

Distributor reported inventory date: 2019-05-20

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DIGIKEY

Stock

2501

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

3000

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0

Region

EUROPE Order Now

MOUSER

Stock

1471

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

102

Min.Order

1

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EUROPE Order Now

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Stock

200

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3000

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EUROPE Order Now

Distributor reported inventory date: 2019-05-20

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LDO40LPU33RY

Package

DFN6 3x3

Packing Type

Tape And Reel

Unit Price (US$)

0.62*

Distributor availability ofLDO40LPU33RY

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2198 1 Order Now
FUTURE WORLDWIDE 3000 3000 Order Now
MOUSER WORLDWIDE 2917 1 Order Now

Distributor reported inventory date: 2019-05-20

Distributor Name

DIGIKEY

Stock

2198

Min.Order

1

Region

WORLDWIDE Order Now

FUTURE

Stock

3000

Min.Order

3000

Region

WORLDWIDE Order Now

MOUSER

Stock

2917

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-05-20

Output Voltage (V) (nom)

3.3

Output Tolerance (typ)

1

Output Current (A) (nom)

0.4

Marketing Status

Active

Unit Price (US$)

0.62

Quantity

1000

ECCN (US)

EAR99

Country of Origin

-

LDO40LPU50RY

Package

DFN6 3x3

Packing Type

Tape And Reel

Unit Price (US$)

0.62*

Output Voltage (V) (nom)

5

Output Tolerance (typ)

1

Output Current (A) (nom)

0.4

Marketing Status

Preview

Unit Price (US$)

0.62

Quantity

1000

ECCN (US)

EAR99

Country of Origin

-

LDO40LPURY

Package

DFN6 3x3

Packing Type

Tape And Reel

Unit Price (US$)

0.62*

Distributor availability ofLDO40LPURY

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2501 1 Order Now
ARROW EUROPE 3000 0 Order Now
MOUSER WORLDWIDE 1471 1 Order Now
Farnell Element14 EUROPE 102 1 Order Now
RUTRONIK EUROPE 200 3000 Order Now

Distributor reported inventory date: 2019-05-20

Distributor Name

DIGIKEY

Stock

2501

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

3000

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

1471

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

102

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

200

Min.Order

3000

Region

EUROPE Order Now

Distributor reported inventory date: 2019-05-20

Output Voltage (V) (nom)

-

Output Tolerance (typ)

1

Output Current (A) (nom)

0.4

Marketing Status

Active

Unit Price (US$)

0.62

Quantity

1000

ECCN (US)

EAR99

Country of Origin

THAILAND

(*) 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

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS12711
      400 mA, 38 V low-dropout regulator, with 45 μA quiescent current
      2.0
      815.73 KB
      PDF
      DS12711

      400 mA, 38 V low-dropout regulator, with 45 μA quiescent current

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
      Brochure Power management guide 10.2018
      4.42 MB
      PDF
      Low-dropout (LDO) linear voltage regulators - Quick Reference Guide 2.0
      216.23 KB
      PDF
      Power management for handheld and portable 2.0
      1.09 MB
      PDF

      Brochure Power management guide

      Low-dropout (LDO) linear voltage regulators - Quick Reference Guide

      Power management for handheld and portable

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
LDO40LPU33RY
Active
DFN6 3x3 Automotive Ecopack2
LDO40LPU50RY
Preview
DFN6 3x3 Automotive Ecopack2
LDO40LPURY
Active
DFN6 3x3 Automotive Ecopack2

LDO40LPU33RY

Package:

DFN6 3x3

Material Declaration**:

Marketing Status

Active

Package

DFN6 3x3

Grade

Automotive

RoHS Compliance Grade

Ecopack2

LDO40LPU50RY

Package:

DFN6 3x3

Material Declaration**:

Marketing Status

Preview

Package

DFN6 3x3

Grade

Automotive

RoHS Compliance Grade

Ecopack2

LDO40LPURY

Package:

DFN6 3x3

Material Declaration**:

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.