STEVAL-ISA047V2 datasheet(1/4 Pages) STMICROELECTRONICS

部件名	STEVAL-ISA047V2

功能描述	1.5 A / 3.3 V step-down DC-DC converter demonstration board based on the ST1S03A

PDF	4 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

1 / 4 page

Data brief

For further information contact your local STMicroelectronics sales office.

July 2009

Doc ID 15973 Rev 1

1/4

4

STEVAL-ISA047V2

1.5 A / 3.3 V step-down DC-DC converter

demonstration board based on the ST1S03A

Features

■ Step-down current mode PWM (1.5 MHz)

DC-DC converter

■ 2% DC output voltage tolerance

■ Internal soft-start for start-up current limitation

and power on delay of 50-100 µs

■ Typical efficiency: > 85%

■ Inhibit function

■ 1.5 A output current capability

■ Not switching quiescent current: max 1.5 mA

(overtemperature range)

■ Switch VDS: max 200 mV @ ISW = 750 mA

■ Uses tiny capacitors and inductors

■ RoHS compliant

Description

This demonstration board is based on the

ST1S03A, an adjustable current mode PWM

step-down DC-DC converter with internal 1.5 A

power switch, packaged in a 6-lead DFN 3x3 mm.

It's a complete 1.5 A switching regulator with its

internal compensation eliminating additional

component.

The constant frequency, current mode, PWM

architecture and stable operation with ceramic

capacitors results in low, predictable output ripple.

However, in order to maximize the power

conversion efficiency with light load, the regulator

reduces automatically the switching frequency

when the output load becomes less than 250 mA

typically.

STEVAL-ISA047V2

www.st.com

类似零件编号 - STEVAL-ISA047V2

制造商	部件名	数据表	功能描述
STMicroelectronics	STEVAL-ISA047V1	214Kb / 4P	1.5 A / 1.2 V step-down DC-DC converter demonstration board based on the ST1S03A 30-Jun-2009

制造商	部件名	数据表	功能描述
Allegro MicroSystems	SI-8033JD	546Kb / 10P	Step-Down to 3.3 V, 1.5 A, DC/DC Converter
	SI-8033JF	335Kb / 9P	Step-Down to 3.3 V, 1.5 A, DC/DC Converter
	SI-8120JD	574Kb / 10P	Step-Down to 12.0 V, 1.5 A, DC/DC Converter
	SI-8120JF	363Kb / 9P	Step-Down to 12.0 V, 1.5 A, DC/DC Converter
	SI-8025JF	320Kb / 9P	Step-Down to 2.5 V, 1.5 A, DC/DC Converter
STMicroelectronics	STEVAL-ISA024V1	84Kb / 4P	20 A step-down DC-DC converter demonstration board with 3.3 Vout and 250 kHz switching frequency, based on the L6725 02-Sep-2008
	STEVAL-ISA042V2	96Kb / 4P	1.5 A / 3.3 V step-down DC-DC converter demonstration board based on the ST1S03 28-Sep-2010
	STEVAL-ISA047V1	214Kb / 4P	1.5 A / 1.2 V step-down DC-DC converter demonstration board based on the ST1S03A 30-Jun-2009
	STEVAL-ISA092V1	95Kb / 4P	2 A step-down switching demonstration board based on the L7980 21-Dec-2011
	EVAL5983	251Kb / 6P	1.5 A step-down switching regulator demonstration board based on the L5983 02-Mar-2009