STMicroelectronics AN2093 Application Note for ST1S03 Buck Converter

This application note describes the ST1S03 features, including voltage range, current range, working frequency, package etc.

Brand: STMicroelectronics
Category: Power Management
Document type: Application Note
Language: English
Pages: 6
File format: PDF
File size: 233 KB
Published: 06 August, 2012
Updated: 30 September, 2023
Model: ST1S03
MD5 checksum: 96ED6586DC8E16AAE8C114F43C42FFC1
PDF: STMicroelectronics AN2093 Application Note for ST1S03 Buck Converter PDF

About this manual

The document provides an overview of the ST1S03, a current mode PWM step-down DC/DC converter with an internal 1.5A power switch. It is designed to replace high-current linear solutions in hard disk drive (HDD) applications by offering up to 1.5A output over an input voltage range of 3V to 16V.

What's inside

Abstract
Introduction
Inductor Choice
Schottky Diode
Conclusions

Specifications

Output Current	up to 1.5A
Input Voltage Range	3V to 16V
Switching Frequency	1.5MHz
Output Voltage Reference	0.8V
Thermal Shutdown Temperature	150°C

Frequently asked questions

What is the minimum inductor value for ST1S03?

The device can work with a minimum of 1µH inductor.

What diode does STMicroelectronics suggest for the application?

They suggest using the STPS2L30A Schottky diode.

What is the minimum input capacitor value?

The minimum suggested input capacitor is 4.7µF ceramic X7R or XSR.

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