STEVAL-ISA094V1 datasheet(1/4 Pages) STMICROELECTRONICS

Teilenummer	STEVAL-ISA094V1

Bauteilbeschribung	3 A step-down switching power supply demonstration board based on the L7981 (HSOP8)

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Hersteller	STMICROELECTRONICS [STMicroelectronics]

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Data brief

For further information contact your local STMicroelectronics sales office.

December 2011

Doc ID 022621 Rev 1

1/4

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STEVAL-ISA094V1

3 A step-down switching power supply demonstration board

based on the L7981 (HSOP8)

Features

■ 3 A DC output current

■ 4.5 V to 28 V input voltage

■ Output voltage adjustable from 0.6 V

■ 250 kHz switching frequency, programmable

up to 1 MHz

■ Internal soft-start and enable

■ Low dropout operation: 100% duty cycle

■ Voltage feed-forward

■ Zero load current operation

■ Overcurrent and thermal protection

■ RoHS compliant

Description

The STEVAL-ISA094V1 is a step-down switching

power supply based on STMicroelectronics’

L7981 switching regulator in an HSOP8 package.

The L7981 features an embedded power

MOSFET and is capable of delivering up to 3 A of

current to the load, depending on the application

conditions.

The input voltage can range from 4.5 V to 28 V,

while the output voltage can be set from 0.6 V to

VIN.

Requiring a minimum number of external

components, the device includes an internal 250

kHz switching frequency oscillator that can be

externally adjusted up to 1 MHz.

STEVAL-ISA094V1

www.st.com

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