500 mA very low drop voltage regulator

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Product overview

Description

The LDFM is a fast, very low drop linear regulator which operates from an input supply voltage in the range of 2.5 V to 16 V.

It is available in fixed and adjustable output voltage versions, from 0.8 V to 12 V.

The LDFM features high output precision, very low dropout voltage, low noise, and low quiescent current, therefore suitable for low voltage microprocessors and memory applications.

Enable logic control pin and Power Good output are featured on PPAK/DFN packages.

Current and thermal protection are provided.

  • All features

    • Input voltage from 2.5 to 16 V
    • Very low dropout voltage (300 mV max. at 500 mA load)
    • Low quiescent current (200 µA typ. @ 500 mA load)
    • Available in 1 % precision in PPAK and DFN6 packages, 2 % in DPAK
    • 500 mA guaranteed output current
    • Wide range of output voltages available on request: adjustable from 0.8 V, fixed up to 12 V in 100 mV steps
    • Logic-controlled electronic shutdown
    • Power Good (PPAK and DFN packages)
    • Fast dynamic response to line and load changes
    • Internal current and thermal protection
    • Temperature range: - 40 °C to 125 °C

EDA Symbols, Footprints and 3D Models

STMicroelectronics - LDFM

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
LDFM33PUR
Active
DFN6 3x3 Industrial Ecopack2
LDFM33PVR
Active
DFN6 2x2 Industrial Ecopack2
LDFMPUR
Active
DFN6 3x3 Industrial Ecopack2
LDFMPVR
Active
DFN6 2x2 Industrial Ecopack2

LDFM33PUR

Package:

DFN6 3x3

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DFN6 3x3

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LDFM33PVR

Package:

DFN6 2x2

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DFN6 2x2

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LDFMPUR

Package:

DFN6 3x3

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DFN6 3x3

Grade

Industrial

RoHS Compliance Grade

Ecopack2

LDFMPVR

Package:

DFN6 2x2

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DFN6 2x2

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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Operating temperature (°C)
Grade
Output Voltage (V) (nom)
Output Tolerance (typ)
Output Current (A) (nom)
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LDFMPUR
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LDFMPVR
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LDFM33PUR
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LDFM33PVR
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Distributor availability of LDFM33PVR

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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

LDFMPUR Active

Budgetary Price (US$)*/Qty:
-
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):

Part Number:

LDFMPUR

Operating Temperature (°C)

Min:

Max:

Grade:

Industrial

Output Voltage (V) (nom):

-

Output Tolerance (typ):

2

Output Current (A) (nom):

0.5

Distributor Name

Distributor reported inventory date:

LDFMPVR Active

Budgetary Price (US$)*/Qty:
-
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):

Part Number:

LDFMPVR

Operating Temperature (°C)

Min:

Max:

Grade:

Industrial

Output Voltage (V) (nom):

-

Output Tolerance (typ):

2

Output Current (A) (nom):

0.5

Distributor Name

Distributor reported inventory date:

LDFM33PUR Active

Budgetary Price (US$)*/Qty:
-
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):

Part Number:

LDFM33PUR

Operating Temperature (°C)

Min:

Max:

Grade:

Industrial

Output Voltage (V) (nom):

-

Output Tolerance (typ):

2

Output Current (A) (nom):

0.5

Distributor Name

Distributor reported inventory date:

LDFM33PVR Active

Budgetary Price (US$)*/Qty:
-
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):

Part Number:

LDFM33PVR

Operating Temperature (°C)

Min:

Max:

Grade:

Industrial

Output Voltage (V) (nom):

-

Output Tolerance (typ):

2

Output Current (A) (nom):

0.5

Distributor Name

Distributor reported inventory date:

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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