1.5 A, 1.5 MHz adjustable, step-down switching regulator

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  • The ST1S03 is a step-down DC-DC converter optimized for powering a low voltage digital core in HDD applications and, generally, to replace the high current linear solution when the power dissipation may cause a high heating of the application environment. It provides up to 1.5 A over an input voltage range of 3 V to 16 V. A high switching frequency (1.5 MHz) allows the use of tiny surface-mount components: as well as the resistor divider to set the output voltage value, only an inductor, a Schottky diode and two capacitors are required. Besides, a low output ripple is guaranteed by the current mode PWM topology and by the use of low ESR SMD ceramic capacitors. The device is thermal protected and current limited to prevent damages due to an accidental short-circuit. The ST1S03 device is available in a DFN6D package.

    主要特性

    • Step-down current mode PWM (1.5 MHz) DC-DC converter
    • 2% DC output voltage tolerance
    • Internal soft-start for STARTUP current limitation and power on delay of 50 - 100 μs
    • Typical efficiency: > 70% over all operating conditions
    • 1.5 A output current capability
    • Not switching quiescent current: max 2.5 mA over temperature range
    • Switch VDS: max. 350 mV at ISW= 750 mA
    • Uses tiny capacitors and inductors
    • Available in DFN6D 3 x 3 mm package with exposed pad

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ST1S03PUR DFN6 3x3 Tape And Reel
Active
0.566 10000 EAR99 PHILIPPINES 查看供货情况

Distributor availability ofST1S03PUR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 31532 1 Order Now
RS COMPONENTS EUROPE 13950 1 Order Now
ARROW EUROPE 12000 0 Order Now
ARROW AMERICA 18000 3000 Order Now
MOUSER WORLDWIDE 6311 1 Order Now
Farnell Element14 EUROPE 1313 1 Order Now

代理商库存报告日期: 2019-08-08

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DIGIKEY

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31532

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1

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RS COMPONENTS

库存

13950

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1

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ARROW

库存

12000

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0

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ARROW

库存

18000

Min.Order

3000

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MOUSER

库存

6311

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1

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Farnell Element14

库存

1313

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1

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EUROPE Order Now

代理商库存报告日期: 2019-08-08

Get sample

ST1S03PUR

封装

DFN6 3x3

包装类型

Tape And Reel

Unit Price (US$)

0.566*

Distributor availability ofST1S03PUR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 31532 1 Order Now
RS COMPONENTS EUROPE 13950 1 Order Now
ARROW EUROPE 12000 0 Order Now
ARROW AMERICA 18000 3000 Order Now
MOUSER WORLDWIDE 6311 1 Order Now
Farnell Element14 EUROPE 1313 1 Order Now

代理商库存报告日期: 2019-08-08

代理商名称

DIGIKEY

库存

31532

Min.Order

1

地区

WORLDWIDE Order Now

RS COMPONENTS

库存

13950

Min.Order

1

地区

EUROPE Order Now

ARROW

库存

12000

Min.Order

0

地区

EUROPE Order Now

ARROW

库存

18000

Min.Order

3000

地区

AMERICA Order Now

MOUSER

库存

6311

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

1313

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-08-08

供货状态

Active

Unit Price (US$)

0.566

数量

10000

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

适合您的资源

评估工具

    • 产品型号

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技术文档

    • Description 版本 文档大小 操作
      DS4126
      1.5 A, 1.5 MHz adjustable, step-down switching regulator
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      DN0011
      ST1S03 alternative topology: Using a buck in a negative buck-boost configuration
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      ST1S03 alternative topology: Using a buck in a negative buck-boost configuration

出版刊物和宣传资料

    • Description 版本 文档大小 操作
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      PDF
      Switching Converters (DC-DC) – Quick Reference Guide 1.0
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      Switching Converters (DC-DC) – Quick Reference Guide

产品型号 供货状态 封装 等级规格 符合RoHS级别 材料声明**
ST1S03PUR
Active
DFN6 3x3 工业 Ecopack2

ST1S03PUR

Package:

DFN6 3x3

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DFN6 3x3

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.