STEVAL-ISA090V1 datasheet(1/4 Pages) STMICROELECTRONICS

No. de pieza	STEVAL-ISA090V1

Descripción Electrónicos	3.5 A step-down switching regulator based on the L4973

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Fabricante Electrónico	STMICROELECTRONICS [STMicroelectronics]

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Data brief

For further information contact your local STMicroelectronics sales office.

April 2011

Doc ID 018689 Rev 1

1/4

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STEVAL-ISA090V1

3.5 A step-down switching regulator based on the L4973

Features

■ Input voltage range: 8 V to 55 V

■ Output voltage: 5.1 V ± 3% (line, load and

thermal)

■ Output ripple: 51 mV

■ Output current range: 1 mA to 3.5 A

■ Max output ripple current: 30%

■ Current limit: 4.5 A

■ Switching frequency: 150 kHz

■ RoHS compliant

Description

The STEVAL-ISA090V1 demonstration board

provides a platform for evaluation of the L4973, a

3.5 A step-down monolithic power switching

regulator operating in continuous mode.

Based on the selection of the external

components, the device can operate in the entire

input voltage range of 8 V < VIN < 55 V. The

output voltage is limited by the voltage rating of

the output capacitor, so it can be adjusted within

the 3.3 V < VOUT < 30 V range through voltage

divider R3, R4. The input and output capacitors

are capable of sustaining the RMS current within

the operating range.

STEVAL-ISA090V1

www.st.com

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STEVAL-ISA090V1 Datasheet(PDF) 1 Page - STMicroelectronics

STEVAL-ISA090V1 Datasheet(HTML) 1 Page - STMicroelectronics

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