STEVAL-ISA047V2 STMicroelectronics, STEVAL-ISA047V2 Datasheet

STEVAL-ISA047V2

Manufacturer Part Number

STEVAL-ISA047V2

Description

BOARD EVAL BASED ON ST1S03A

Manufacturer

STMicroelectronics

Series

0040r

Datasheets

1.ST1S03APUR.pdf (14 pages)

2.STEVAL-ISA047V2.pdf (4 pages)

Specifications of STEVAL-ISA047V2

Mfg Application Notes

ST1S03 AppNote

Main Purpose

DC/DC, Step Down

Outputs And Type

1, Non-Isolated

Voltage - Output

3.3V

Current - Output

1.5A

Voltage - Input

3 ~ 5.5 V

Regulator Topology

Buck

Frequency - Switching

1.5MHz

Board Type

Fully Populated

Utilized Ic / Part

ST1S03A

Product

Power Management Modules

Silicon Manufacturer

ST Micro

Silicon Core Number

ST1S03A

Kit Application Type

Power Management - Voltage Regulator

Application Sub Type

Step Down DC/DC Converter

Kit Contents

Board

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Power - Output

Lead Free Status / Rohs Status

Lead free / RoHS Compliant

Other names

497-6375

Current page: 1 of 4
Download datasheet (215Kb)

Features

■

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.

July 2009

For further information contact your local STMicroelectronics sales office.

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 V

Uses tiny capacitors and inductors

RoHS compliant

: max 200 mV @ I

demonstration board based on the ST1S03A

= 750 mA

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

Doc ID 15973 Rev 1

STEVAL-ISA047V2

www.st.com

Data brief

1/4

Related parts for STEVAL-ISA047V2

STEVAL-ISA047V2 Summary of contents

Page 1

... July 2009 For further information contact your local STMicroelectronics sales office. 1 3.3 V step-down DC-DC converter demonstration board based on the ST1S03A = 750 mA SW Doc ID 15973 Rev 1 STEVAL-ISA047V2 STEVAL-ISA047V2 Data brief 1/4 www.st.com 4 ...

Page 2

... Circuit schematic 1 Circuit schematic Figure 1. Schematic diagram 2/4 Doc ID 15973 Rev 1 STEVAL-ISA047V2 ...

Page 3

... STEVAL-ISA047V2 2 Revision history Table 1. Document revision history Date 01-Jul-2009 Revision 1 Initial release. Doc ID 15973 Rev 1 Revision history Changes 3/4 ...

Page 4

... Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America 4/4 Please Read Carefully: © 2009 STMicroelectronics - All rights reserved STMicroelectronics group of companies www.st.com Doc ID 15973 Rev 1 STEVAL-ISA047V2 ...

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