3A DC step-down switching regulator

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  • The ST1S40 device is an internally compensated 850 kHz fixed-frequency PWM synchronous step-down regulator. The ST1S40 operates from 4.0 V to 18 V input, while it regulates an output voltage as low as 0.8 V and up to VIN.

    The ST1S40 integrates a 95 mΩ high side switch and 69 mΩ synchronous rectifier allowing very high efficiency with very low output voltages.
    The peak current mode control with internal compensation delivers a very compact solution with a minimum component count.
    The ST1S40 is available in HSOP-8, VFQFPN 4 mm x 4 mm - 8 lead, and standard SO8 package.

    主要特性

    • 3 A DC output current
    • 4.0 V to 18 V input voltage
    • Output voltage adjustable from 0.8 V
    • 850 kHz switching frequency
    • Internal soft-start
    • Integrated 95 mΩ and 69 mΩ Power MOSFETs
    • All ceramic capacitor
    • Enable
    • Cycle-by-cycle current limiting
    • Current fold back short-circuit protection
    • Available in HSOP-8, VFQFPN4x4-8L, and SO8 packages

样片和购买

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ST1S40IPHR PowerSO-8 Tape And Reel
批量生产
0.76 10000 EAR99 PHILIPPINES 查看供货情况

Distributor availability ofST1S40IPHR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 7557 1 Order Now
RS COMPONENTS EUROPE 2500 1 Order Now
AVNET AMERICA 7500 0 Order Now
MOUSER WORLDWIDE 11529 1 Order Now
Farnell Element14 EUROPE 2165 1 Order Now

代理商库存报告日期: 2019-09-25

代理商名称

DIGIKEY

库存

7557

Min.Order

1

地区

WORLDWIDE Order Now

RS COMPONENTS

库存

2500

Min.Order

1

地区

EUROPE Order Now

AVNET

库存

7500

Min.Order

0

地区

AMERICA Order Now

MOUSER

库存

11529

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

2165

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-09-25

获取样片
ST1S40IDR SO-8 Tape And Reel
批量生产
0.68 10000 EAR99 CHINA 查看供货情况

Distributor availability ofST1S40IDR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 20645 1 Order Now
ARROW EUROPE 17500 0 Order Now
Newark Element14 AMERICA 322 0 Order Now
MOUSER WORLDWIDE 3918 1 Order Now
Farnell Element14 EUROPE 197 1 Order Now

代理商库存报告日期: 2019-09-25

代理商名称

DIGIKEY

库存

20645

Min.Order

1

地区

WORLDWIDE Order Now

ARROW

库存

17500

Min.Order

0

地区

EUROPE Order Now

Newark Element14

库存

322

Min.Order

0

地区

AMERICA Order Now

MOUSER

库存

3918

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

197

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-09-25

获取样片
ST1S40IPUR DFN8 4x4 Tape And Reel
批量生产
0.798 10000 EAR99 MALAYSIA 查看供货情况

Distributor availability ofST1S40IPUR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 3790 1 Order Now
FUTURE WORLDWIDE 4500 4500 Order Now
MOUSER WORLDWIDE 3770 1 Order Now

代理商库存报告日期: 2019-09-25

代理商名称

DIGIKEY

库存

3790

Min.Order

1

地区

WORLDWIDE Order Now

FUTURE

库存

4500

Min.Order

4500

地区

WORLDWIDE Order Now

MOUSER

库存

3770

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-09-25

获取样片

ST1S40IPHR

封装

PowerSO-8

包装类型

Tape And Reel

单价(US$)

0.76*

Distributor availability ofST1S40IPHR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 7557 1 Order Now
RS COMPONENTS EUROPE 2500 1 Order Now
AVNET AMERICA 7500 0 Order Now
MOUSER WORLDWIDE 11529 1 Order Now
Farnell Element14 EUROPE 2165 1 Order Now

代理商库存报告日期: 2019-09-25

代理商名称

DIGIKEY

库存

7557

Min.Order

1

地区

WORLDWIDE Order Now

RS COMPONENTS

库存

2500

Min.Order

1

地区

EUROPE Order Now

AVNET

库存

7500

Min.Order

0

地区

AMERICA Order Now

MOUSER

库存

11529

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

2165

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-09-25

供货状态

批量生产

单价(US$)

0.76

数量

10000

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

ST1S40IDR

封装

SO-8

包装类型

Tape And Reel

单价(US$)

0.68*

Distributor availability ofST1S40IDR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 20645 1 Order Now
ARROW EUROPE 17500 0 Order Now
Newark Element14 AMERICA 322 0 Order Now
MOUSER WORLDWIDE 3918 1 Order Now
Farnell Element14 EUROPE 197 1 Order Now

代理商库存报告日期: 2019-09-25

代理商名称

DIGIKEY

库存

20645

Min.Order

1

地区

WORLDWIDE Order Now

ARROW

库存

17500

Min.Order

0

地区

EUROPE Order Now

Newark Element14

库存

322

Min.Order

0

地区

AMERICA Order Now

MOUSER

库存

3918

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

197

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-09-25

供货状态

批量生产

单价(US$)

0.68

数量

10000

ECCN (US)

EAR99

Country of Origin

CHINA

ST1S40IPUR

封装

DFN8 4x4

包装类型

Tape And Reel

单价(US$)

0.798*

Distributor availability ofST1S40IPUR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 3790 1 Order Now
FUTURE WORLDWIDE 4500 4500 Order Now
MOUSER WORLDWIDE 3770 1 Order Now

代理商库存报告日期: 2019-09-25

代理商名称

DIGIKEY

库存

3790

Min.Order

1

地区

WORLDWIDE Order Now

FUTURE

库存

4500

Min.Order

4500

地区

WORLDWIDE Order Now

MOUSER

库存

3770

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-09-25

供货状态

批量生产

单价(US$)

0.798

数量

10000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

(*) 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

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    • 产品型号

      4 A peak, 800 kHz fixed-frequency PWM synchronous step-down demonstration board with enable on/off based on the ST1S40

00 选择要下载的文档

技术文档

    • Description 版本 文档大小 操作
      DS6942
      3 A DC step-down switching regulator
      5.0
      1.02 MB
      PDF
      DS6942

      3 A DC step-down switching regulator

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产品型号 供货状态 封装 等级规格 符合RoHS级别 材料声明**
ST1S40IDR
批量生产
SO-8 工业 Ecopack2
ST1S40IPHR
批量生产
PowerSO-8 工业 Ecopack2
ST1S40IPUR
批量生产
DFN8 4x4 工业 Ecopack2

ST1S40IDR

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

ST1S40IPHR

Package:

PowerSO-8

Material Declaration**:

Marketing Status

批量生产

Package

PowerSO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

ST1S40IPUR

Package:

DFN8 4x4

Material Declaration**:

Marketing Status

批量生产

Package

DFN8 4x4

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.

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