L4975A

Active
Design Win

5 A switching 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 L4975A is a stepdown monolithic power switching regulator delivering 5A at a voltage variable from 5.1 to 40V. Realized with BCD mixed technology, the device uses a DMOS output transistor to obtain very high efficiency and very fast switching times. Features of the L4975A include reset and power fail for microprocessors, feed forward line regulation, soft start, limiting current and thermal protection. The device is mounted in a 15-lead multiwatt plastic power package and requires few external components. Efficient operation at switching frequencies up to 500KHz allows reduction in the size and cost of external filter component.
  • All features

    • UNDER VOLTAGE LOCK OUT WITH HYSTERETIC TURN-ON
    • INPUT/OUTPUT SYNC PIN
    • VERY HIGH EFFICIENCY
    • PWM LATCH FOR SINGLE PULSE PER PERIOD
    • THERMAL SHUTDOWN
    • SWITCHING FREQUENCY UP TO 500KHz
    • CONTINUOUS MODE OPERATION
    • RESET AND POWER FAIL FUNCTIONS
    • PRECISE 5.1V ± 2% ON CHIP REFERENCE
    • 5A OUTPUT CURRENT
    • 0 TO 90% DUTY CYCLE RANGE
    • 5.1V TO 40V OUTPUT VOLTAGE RANGE
    • INTERNAL CURRENT LIMITING
    • SOFT START
    • INTERNAL FEED-FORWARD LINE REG.

Circuit Diagram

EDA Symbols, Footprints and 3D Models

STMicroelectronics - L4975A

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**
L4975A
Active
MW 15L Industrial Ecopack1

L4975A

Package:

MW 15L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

MW 15L

Grade

Industrial

RoHS Compliance Grade

Ecopack1

(**) 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) Country of Origin
Budgetary Price (US$)*/Qty
min
max
L4975A Available at 4 distributors

Distributor availability ofL4975A

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 102 1 Buy from Distributor
Newark Element14 AMERICA 1 0 Buy from Distributor
MOUSER WORLDWIDE 445 1 Buy from Distributor
Farnell Element14 EUROPE 131 1 Buy from Distributor

Distributor reported inventory date: 2022-07-22

Distributor Name

RS COMPONENTS

Stock

102

Min.Order

1

Newark Element14

Stock

1

Min.Order

0

Region

AMERICA Buy from Distributor

MOUSER

Stock

445

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

131

Min.Order

1

Distributor reported inventory date: 2022-07-22

Active
EAR99 NEC Tube MW 15L - - MOROCCO

L4975A Active

Package:
MW 15L
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

L4975A

ECCN (EU):

NEC

Packing Type:

Tube

Operating Temperature (°C)

Min:

-

Max:

-

Country of Origin:

MOROCCO

Distributor availability ofL4975A

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 102 1 Buy from Distributor
Newark Element14 AMERICA 1 0 Buy from Distributor
MOUSER WORLDWIDE 445 1 Buy from Distributor
Farnell Element14 EUROPE 131 1 Buy from Distributor

Distributor reported inventory date: 2022-07-22

Distributor Name

RS COMPONENTS

Stock

102

Min.Order

1

Newark Element14

Stock

1

Min.Order

0

Region

AMERICA Buy from Distributor

MOUSER

Stock

445

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

131

Min.Order

1

Distributor reported inventory date: 2022-07-22

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