500 mA very low drop voltage regulator

Download datasheet Order Direct
Overview
Sample & Buy
Solutions
Documentation
CAD Resources
Tools & Software
Quality & Reliability
Get Started
Partner products
Sales Briefcase

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

Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.

Symbols

Symbols

Footprints

Footprints

3D model

3D models

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

Swipe or click the button to explore more details Don't show this again
Part Number
Order from distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Output Voltage (V) (nom)
Budgetary Price (US$)*/Qty
Output Tolerance (typ)
Output Current (A) (nom)
Unit Price (US$)
Country of Origin
min
max
LDFMPUR Available at 1 distributors

Distributor availability ofLDFMPUR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5590 1 Buy from Distributor

Distributor reported inventory date: 2022-08-12

Distributor Name

DIGIKEY

Stock

5590

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-08-12

Active
EAR99 NEC Tape and Reel DFN6 3x3 -40 125 -

2

0.5

0.5497

CHINA

LDFMPVR Available at 2 distributors

Distributor availability ofLDFMPVR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2940 1 Buy from Distributor
MOUSER WORLDWIDE 10520 1 Buy from Distributor

Distributor reported inventory date: 2022-08-12

Distributor Name

DIGIKEY

Stock

2940

Min.Order

1

Region

WORLDWIDE Buy from Distributor

MOUSER

Stock

10520

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-08-12

Active
EAR99 NEC Tape and Reel DFN6 2x2 -40 125 -

2

0.5

0.5497

CHINA

LDFM33PUR No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tape and Reel DFN6 3x3 -40 125 -

2

0.5

0.5497

CHINA

LDFM33PVR No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tape and Reel DFN6 2x2 -40 125 -

2

0.5

0.5497

CHINA

LDFMPUR Active

Package:
DFN6 3x3
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LDFMPUR

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

125

Output Voltage (V) (nom):

-

Output Tolerance (typ):

2

Output Current (A) (nom):

0.5

Country of Origin:

CHINA

Distributor availability ofLDFMPUR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5590 1 Buy from Distributor

Distributor reported inventory date: 2022-08-12

Distributor Name

DIGIKEY

Stock

5590

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-08-12

LDFMPVR Active

Package:
DFN6 2x2
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LDFMPVR

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

125

Output Voltage (V) (nom):

-

Output Tolerance (typ):

2

Output Current (A) (nom):

0.5

Country of Origin:

CHINA

Distributor availability ofLDFMPVR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2940 1 Buy from Distributor
MOUSER WORLDWIDE 10520 1 Buy from Distributor

Distributor reported inventory date: 2022-08-12

Distributor Name

DIGIKEY

Stock

2940

Min.Order

1

Region

WORLDWIDE Buy from Distributor

MOUSER

Stock

10520

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-08-12

LDFM33PUR Active

Package:
DFN6 3x3
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LDFM33PUR

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

125

Output Voltage (V) (nom):

-

Output Tolerance (typ):

2

Output Current (A) (nom):

0.5

Country of Origin:

CHINA

No availability of distributors reported, please contact our sales office

LDFM33PVR Active

Package:
DFN6 2x2
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

LDFM33PVR

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

125

Output Voltage (V) (nom):

-

Output Tolerance (typ):

2

Output Current (A) (nom):

0.5

Country of Origin:

CHINA

No availability of distributors reported, please contact our sales office
Swipe or click the button to explore more details Don't show this again

(*) 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