L4970A

NRND
Design Win

10 A switching regulator

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Product overview

Description

The L4970A is a stepdown monolithic power switching regulator delivering 10A 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 L4970A 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 components.

  • 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
    • 10A OUTPUT CURRENT
    • 0 TO 90% DUTY CYCLE RANGE
    • 5.1V TO 40V OUTPUT VOLTAGE RANGE
    • INTERNAL CURRENT LIMITING
    • SOFT START
    • INTERNAL FEED-FORWARD LINE REGULATION

Circuit Diagram

EDA Symbols, Footprints and 3D Models

STMicroelectronics - L4970A

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3D models

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L4970A
NRND
MW 15L Industrial Ecopack1

L4970A

Package:

MW 15L

Material Declaration**:

Marketing Status

NRND

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

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L4970A Available at distributors

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NRND
EAR99 NEC Tube MW 15L - - MOROCCO

L4970A NRND

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

Part Number:

L4970A

ECCN (EU):

NEC

Packing Type:

Tube

Operating Temperature (°C)

Min:

-

Max:

-

Country of Origin:

MOROCCO

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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