LD56100

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Design Win

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

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Product overview

Description

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.

  • All 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

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STMicroelectronics - LD56100

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Quality and Reliability

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
LD56100DPU25R
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

LD56100DPU25R

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**:

PDF XML

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.

Sample & Buy

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Part Number
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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
LD56100DPU175R Available at distributors

Distributor availability of LD56100DPU175R

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Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
Preview
Industrial EAR99 NEC Tape and Reel DFN8 1.2x1.6 -40 85

1.75

1

1

0.1953

CHINA

LD56100DPU18R Available at distributors

Distributor availability of LD56100DPU18R

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Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
Active
Industrial EAR99 NEC Tape and Reel DFN8 1.2x1.6 -40 85

1.8

1

1

0.1953

CHINA

LD56100DPU28R Available at distributors

Distributor availability of LD56100DPU28R

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Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
Active
Industrial EAR99 NEC Tape and Reel DFN8 1.2x1.6 -40 85

2.8

1

1

0.1953

CHINA

LD56100DPU15R Available at distributors

Distributor availability of LD56100DPU15R

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Region Stock Min. Order Third party link

Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
Preview
Industrial EAR99 NEC Tape and Reel DFN8 1.2x1.6 -40 85

1.5

1

1

0.1953

CHINA

LD56100DPU115R Available at distributors

Distributor availability of LD56100DPU115R

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Region Stock Min. Order Third party link

Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
Preview
Industrial EAR99 NEC Tape and Reel DFN8 1.2x1.6 -40 85

1.15

1

1

0.1953

CHINA

LD56100DPU33R Available at distributors

Distributor availability of LD56100DPU33R

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 DFN8 1.2x1.6 -40 85

3.3

1

1

0.1953

CHINA

LD56100DPU30R Available at distributors

Distributor availability of LD56100DPU30R

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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 DFN8 1.2x1.6 -40 85

3

1

1

0.1953

CHINA

LD56100DPU125R Available at distributors

Distributor availability of LD56100DPU125R

Distributor Name
Region Stock Min. Order Third party link

Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
Preview
Industrial EAR99 NEC Tape and Reel DFN8 1.2x1.6 -40 85

1.25

1

1

0.1953

CHINA

LD56100DPU185R Available at distributors

Distributor availability of LD56100DPU185R

Distributor Name
Region Stock Min. Order Third party link

Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
Preview
Industrial EAR99 NEC Tape and Reel DFN8 1.2x1.6 -40 85

1.8

1

1

0.1953

CHINA

LD56100DPU31R Available at distributors

Distributor availability of LD56100DPU31R

Distributor Name
Region Stock Min. Order Third party link

Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
Preview
Industrial EAR99 NEC Tape and Reel DFN8 1.2x1.6 -40 85

3.1

1

1

0.1953

CHINA

LD56100DPU25R Available at distributors

Distributor availability of LD56100DPU25R

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 DFN8 1.2x1.6 -40 85

-

1

1

0.1953

CHINA

LD56100DPU175R Preview

Package:
DFN8 1.2x1.6
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LD56100DPU175R

Grade:

Industrial

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

85

Output Voltage (V) (nom):

1.75

Output Tolerance (typ):

1

Output Current (A) (nom):

1

Country of Origin:

CHINA

LD56100DPU18R Active

Package:
DFN8 1.2x1.6
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LD56100DPU18R

Grade:

Industrial

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

85

Output Voltage (V) (nom):

1.8

Output Tolerance (typ):

1

Output Current (A) (nom):

1

Country of Origin:

CHINA

Distributor Name

Distributor reported inventory date:

LD56100DPU28R Active

Package:
DFN8 1.2x1.6
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LD56100DPU28R

Grade:

Industrial

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

85

Output Voltage (V) (nom):

2.8

Output Tolerance (typ):

1

Output Current (A) (nom):

1

Country of Origin:

CHINA

Distributor Name

Distributor reported inventory date:

LD56100DPU15R Preview

Package:
DFN8 1.2x1.6
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LD56100DPU15R

Grade:

Industrial

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

85

Output Voltage (V) (nom):

1.5

Output Tolerance (typ):

1

Output Current (A) (nom):

1

Country of Origin:

CHINA

LD56100DPU115R Preview

Package:
DFN8 1.2x1.6
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LD56100DPU115R

Grade:

Industrial

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

85

Output Voltage (V) (nom):

1.15

Output Tolerance (typ):

1

Output Current (A) (nom):

1

Country of Origin:

CHINA

LD56100DPU33R Active

Package:
DFN8 1.2x1.6
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LD56100DPU33R

Grade:

Industrial

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

85

Output Voltage (V) (nom):

3.3

Output Tolerance (typ):

1

Output Current (A) (nom):

1

Country of Origin:

CHINA

Distributor Name

Distributor reported inventory date:

LD56100DPU30R Active

Package:
DFN8 1.2x1.6
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LD56100DPU30R

Grade:

Industrial

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

85

Output Voltage (V) (nom):

3

Output Tolerance (typ):

1

Output Current (A) (nom):

1

Country of Origin:

CHINA

Distributor Name

Distributor reported inventory date:

LD56100DPU125R Preview

Package:
DFN8 1.2x1.6
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LD56100DPU125R

Grade:

Industrial

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

85

Output Voltage (V) (nom):

1.25

Output Tolerance (typ):

1

Output Current (A) (nom):

1

Country of Origin:

CHINA

LD56100DPU185R Preview

Package:
DFN8 1.2x1.6
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LD56100DPU185R

Grade:

Industrial

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

85

Output Voltage (V) (nom):

1.8

Output Tolerance (typ):

1

Output Current (A) (nom):

1

Country of Origin:

CHINA

LD56100DPU31R Preview

Package:
DFN8 1.2x1.6
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LD56100DPU31R

Grade:

Industrial

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

85

Output Voltage (V) (nom):

3.1

Output Tolerance (typ):

1

Output Current (A) (nom):

1

Country of Origin:

CHINA

LD56100DPU25R Active

Package:
DFN8 1.2x1.6
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LD56100DPU25R

Grade:

Industrial

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

85

Output Voltage (V) (nom):

-

Output Tolerance (typ):

1

Output Current (A) (nom):

1

Country of Origin:

CHINA

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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