1A very low dropout fast transient ultra-low noise linear regulator

Download datasheet

Order a free sample and buy from our distributors

Sample & Buy
Overview
Tools & Software
Resources
Solutions
Quality & Reliability
Sales Briefcase
eDesignSuite
Get Started
Sample & Buy
Partner products
  • The LD56100 high accuracy voltage regulator provides 1 A of current from an input voltage ranging from 1.8 V to 5.5 V, with a typical dropout voltage of 120 mV.

    It is available in DFN8 (1.2 x 1.6 mm) package, allowing the maximum space saving.
    The device is stabilized with a ceramic capacitor on the output. The ultra-low drop voltage, low quiescent current and fast transient response, together with the internal soft-start circuit, make the LD56100 suitable for low power battery-operated applications.
    An enable logic control function puts the LD56100 in shutdown mode allowing a total current consumption lower than 0.1 μA. Short-circuit protection with current limit foldback and thermal protection are also included.

    Key Features

    • Input voltage from 1.8 to 5.5 V
    • Ultra-low dropout voltage (120 mV typ. at 1 A load and VOUT = 3.3 V)
    • Very low quiescent current (100 µA typ. at no-load, 0.03 µA typ. in off mode)
    • Output voltage tolerance: ± 1% from -40 °C to +85 °C
    • Ultra-low Noise: 13 µV RMS Noise from 10 Hz to 100 kHz at VOUT = 3.0 V
    • High PSRR (70 dB@1 kHz)
    • Wide range of output voltages available on request: from 1.0 V up to 5.0 V in 50 mV step
    • Logic-controlled electronic shutdown
    • Internal soft-start
    • Optional output voltage discharge feature
    • Compatible with ceramic capacitor COUT = 1 µF
    • Internal current limit foldback and thermal protections
    • Available in DFN8 (1.2x1.6 mm)
    • Operating temperature range: -40 °C to 125 °C

Sample & Buy

Part Number
Package
Packing Type
Output Voltage (V) (nom)
Output Tolerance (typ)
Output Current (A) (nom)
Marketing Status
Budgetary Price (US$)*
Quantity
More info
Order from Distributors
Order from ST
LD56100DPU175R DFN8 1.2x1.6 Tape And Reel 1.75 1 1
Preview
0.16 10000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

-

No availability of distributors reported, please contact our sales office
LD56100DPU18R DFN8 1.2x1.6 Tape And Reel 1.8 1 1
Active
0.16 10000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

CHINA

No availability of distributors reported, please contact our sales office
LD56100DPU28R DFN8 1.2x1.6 Tape And Reel 2.8 1 1
Active
0.16 10000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

CHINA

No availability of distributors reported, please contact our sales office
LD56100DPU15R DFN8 1.2x1.6 Tape And Reel 1.5 1 1
Preview
0.16 10000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

-

No availability of distributors reported, please contact our sales office
LD56100DPU115R DFN8 1.2x1.6 Tape And Reel 1.15 1 1
Preview
0.16 10000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

-

No availability of distributors reported, please contact our sales office
LD56100DPU33R DFN8 1.2x1.6 Tape And Reel 3.3 1 1
Active
0.16 10000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

CHINA

Check Availability

Distributor availability ofLD56100DPU33R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2970 1 Order Now
AVNET AMERICA 3000 0 Order Now
FUTURE WORLDWIDE 6000 3000 Order Now
MOUSER WORLDWIDE 5807 1 Order Now
RUTRONIK EUROPE 3000 3000 Order Now

Distributor reported inventory date: 2019-11-11

Distributor Name

DIGIKEY

Stock

2970

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

3000

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

6000

Min.Order

3000

Region

WORLDWIDE Order Now

MOUSER

Stock

5807

Min.Order

1

Region

WORLDWIDE Order Now

RUTRONIK

Stock

3000

Min.Order

3000

Region

EUROPE Order Now

Distributor reported inventory date: 2019-11-11

Get sample
LD56100DPU30R DFN8 1.2x1.6 Tape And Reel 3 1 1
Active
0.16 10000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

CHINA

Check Availability

Distributor availability ofLD56100DPU30R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3627 1 Order Now
MOUSER WORLDWIDE 2041 1 Order Now

Distributor reported inventory date: 2019-11-11

Distributor Name

DIGIKEY

Stock

3627

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

2041

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-11-11

Get sample
LD56100DPU125R DFN8 1.2x1.6 Tape And Reel 1.25 1 1
Preview
0.16 10000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

-

No availability of distributors reported, please contact our sales office
LD56100DPU185R DFN8 1.2x1.6 Tape And Reel 1.8 1 1
Preview
0.16 10000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

-

No availability of distributors reported, please contact our sales office
LD56100DPU31R DFN8 1.2x1.6 Tape And Reel 3.1 1 1
Preview
0.16 10000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

-

No availability of distributors reported, please contact our sales office

LD56100DPU175R

Package

DFN8 1.2x1.6

Packing Type

Tape And Reel

Unit Price (US$)

0.16*

Output Voltage (V) (nom)

1.75

Output Tolerance (typ)

1

Output Current (A) (nom)

1

Marketing Status

Preview

Unit Price (US$)

0.16

Quantity

10000

ECCN (US)

EAR99

Country of Origin

-

LD56100DPU18R

Package

DFN8 1.2x1.6

Packing Type

Tape And Reel

Unit Price (US$)

0.16*

Output Voltage (V) (nom)

1.8

Output Tolerance (typ)

1

Output Current (A) (nom)

1

Marketing Status

Active

Unit Price (US$)

0.16

Quantity

10000

ECCN (US)

EAR99

Country of Origin

CHINA

LD56100DPU28R

Package

DFN8 1.2x1.6

Packing Type

Tape And Reel

Unit Price (US$)

0.16*

Output Voltage (V) (nom)

2.8

Output Tolerance (typ)

1

Output Current (A) (nom)

1

Marketing Status

Active

Unit Price (US$)

0.16

Quantity

10000

ECCN (US)

EAR99

Country of Origin

CHINA

LD56100DPU15R

Package

DFN8 1.2x1.6

Packing Type

Tape And Reel

Unit Price (US$)

0.16*

Output Voltage (V) (nom)

1.5

Output Tolerance (typ)

1

Output Current (A) (nom)

1

Marketing Status

Preview

Unit Price (US$)

0.16

Quantity

10000

ECCN (US)

EAR99

Country of Origin

-

LD56100DPU115R

Package

DFN8 1.2x1.6

Packing Type

Tape And Reel

Unit Price (US$)

0.16*

Output Voltage (V) (nom)

1.15

Output Tolerance (typ)

1

Output Current (A) (nom)

1

Marketing Status

Preview

Unit Price (US$)

0.16

Quantity

10000

ECCN (US)

EAR99

Country of Origin

-

LD56100DPU33R

Package

DFN8 1.2x1.6

Packing Type

Tape And Reel

Unit Price (US$)

0.16*

Distributor availability ofLD56100DPU33R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2970 1 Order Now
AVNET AMERICA 3000 0 Order Now
FUTURE WORLDWIDE 6000 3000 Order Now
MOUSER WORLDWIDE 5807 1 Order Now
RUTRONIK EUROPE 3000 3000 Order Now

Distributor reported inventory date: 2019-11-11

Distributor Name

DIGIKEY

Stock

2970

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

3000

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

6000

Min.Order

3000

Region

WORLDWIDE Order Now

MOUSER

Stock

5807

Min.Order

1

Region

WORLDWIDE Order Now

RUTRONIK

Stock

3000

Min.Order

3000

Region

EUROPE Order Now

Distributor reported inventory date: 2019-11-11

Output Voltage (V) (nom)

3.3

Output Tolerance (typ)

1

Output Current (A) (nom)

1

Marketing Status

Active

Unit Price (US$)

0.16

Quantity

10000

ECCN (US)

EAR99

Country of Origin

CHINA

LD56100DPU30R

Package

DFN8 1.2x1.6

Packing Type

Tape And Reel

Unit Price (US$)

0.16*

Distributor availability ofLD56100DPU30R

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3627 1 Order Now
MOUSER WORLDWIDE 2041 1 Order Now

Distributor reported inventory date: 2019-11-11

Distributor Name

DIGIKEY

Stock

3627

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

2041

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-11-11

Output Voltage (V) (nom)

3

Output Tolerance (typ)

1

Output Current (A) (nom)

1

Marketing Status

Active

Unit Price (US$)

0.16

Quantity

10000

ECCN (US)

EAR99

Country of Origin

CHINA

LD56100DPU125R

Package

DFN8 1.2x1.6

Packing Type

Tape And Reel

Unit Price (US$)

0.16*

Output Voltage (V) (nom)

1.25

Output Tolerance (typ)

1

Output Current (A) (nom)

1

Marketing Status

Preview

Unit Price (US$)

0.16

Quantity

10000

ECCN (US)

EAR99

Country of Origin

-

LD56100DPU185R

Package

DFN8 1.2x1.6

Packing Type

Tape And Reel

Unit Price (US$)

0.16*

Output Voltage (V) (nom)

1.8

Output Tolerance (typ)

1

Output Current (A) (nom)

1

Marketing Status

Preview

Unit Price (US$)

0.16

Quantity

10000

ECCN (US)

EAR99

Country of Origin

-

LD56100DPU31R

Package

DFN8 1.2x1.6

Packing Type

Tape And Reel

Unit Price (US$)

0.16*

Output Voltage (V) (nom)

3.1

Output Tolerance (typ)

1

Output Current (A) (nom)

1

Marketing Status

Preview

Unit Price (US$)

0.16

Quantity

10000

ECCN (US)

EAR99

Country of Origin

-

(*) 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

Recommended for you

Related Applications

Smart Phones, Tablets and eReaders

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS12423
      1 A very low dropout fast transient ultra-low noise linear regulator
      1.0
      1.53 MB
      PDF
      DS12423

      1 A very low dropout fast transient ultra-low noise linear 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 2.0
      216.23 KB
      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

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
LD56100DPU115R
Preview
DFN8 1.2x1.6 Industrial Ecopack2
LD56100DPU125R
Preview
DFN8 1.2x1.6 Industrial Ecopack2
LD56100DPU15R
Preview
DFN8 1.2x1.6 Industrial Ecopack2
LD56100DPU175R
Preview
DFN8 1.2x1.6 Industrial Ecopack2
LD56100DPU185R
Preview
DFN8 1.2x1.6 Industrial Ecopack2
LD56100DPU18R
Active
DFN8 1.2x1.6 Industrial Ecopack2
LD56100DPU28R
Active
DFN8 1.2x1.6 Industrial Ecopack2
LD56100DPU30R
Active
DFN8 1.2x1.6 Industrial Ecopack2
LD56100DPU31R
Preview
DFN8 1.2x1.6 Industrial Ecopack2
LD56100DPU33R
Active
DFN8 1.2x1.6 Industrial Ecopack2

LD56100DPU115R

Package:

DFN8 1.2x1.6

Material Declaration**:

Marketing Status

Preview

Package

DFN8 1.2x1.6

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD56100DPU125R

Package:

DFN8 1.2x1.6

Material Declaration**:

Marketing Status

Preview

Package

DFN8 1.2x1.6

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD56100DPU15R

Package:

DFN8 1.2x1.6

Material Declaration**:

Marketing Status

Preview

Package

DFN8 1.2x1.6

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD56100DPU175R

Package:

DFN8 1.2x1.6

Material Declaration**:

Marketing Status

Preview

Package

DFN8 1.2x1.6

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD56100DPU185R

Package:

DFN8 1.2x1.6

Material Declaration**:

Marketing Status

Preview

Package

DFN8 1.2x1.6

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD56100DPU18R

Package:

DFN8 1.2x1.6

Material Declaration**:

Marketing Status

Active

Package

DFN8 1.2x1.6

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD56100DPU28R

Package:

DFN8 1.2x1.6

Material Declaration**:

Marketing Status

Active

Package

DFN8 1.2x1.6

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD56100DPU30R

Package:

DFN8 1.2x1.6

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DFN8 1.2x1.6

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD56100DPU31R

Package:

DFN8 1.2x1.6

Material Declaration**:

Marketing Status

Preview

Package

DFN8 1.2x1.6

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LD56100DPU33R

Package:

DFN8 1.2x1.6

Material Declaration**:

Marketing Status

Active

Package

DFN8 1.2x1.6

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.