3 A DC step-down switching regulator

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  • The ST1S31 device is an internally compensated 1.5 MHz fixed-frequency PWM synchronous step-down regulator. The ST1S31 operates from 2.8 V to 5.5 V input, while it regulates an output voltage as low as 0.8 V and up to VIN.

    The ST1S31 integrates a 60 mΩ high-side switch and a 45 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 ST1S31 device is available in 3 mm x 3 mm, 8 lead VFDFPN and SO8 packages.

    主要特性

    • 3 A DC output current
    • 2.8 V to 5.5 V input voltage
    • Output voltage adjustable from 0.8 V
    • 1.5 MHz switching frequency
    • Internal soft-start and enable
    • Integrated 60 mΩ and 45 mΩ power MOSFETs
    • All ceramic capacitor
    • Power Good (POR)
    • Cycle-by-cycle current limiting
    • Current foldback short-circuit protection
    • VFDFPN 3 x 3 - 8L, SO8 packages

样片和购买

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ST1S31D-R SO-8 Tape And Reel
批量生产
0.471 10000 EAR99 CHINA 查看供货情况

Distributor availability ofST1S31D-R

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 2475 1 Order Now
RS COMPONENTS EUROPE 45 1 Order Now
MOUSER WORLDWIDE 4903 1 Order Now

代理商库存报告日期: 2019-12-08

代理商名称

DIGIKEY

库存

2475

Min.Order

1

地区

WORLDWIDE Order Now

RS COMPONENTS

库存

45

Min.Order

1

地区

EUROPE Order Now

MOUSER

库存

4903

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-12-08

获取样片
ST1S31PUR VFDFPN 8 3x3x1.0 Tape And Reel
批量生产
0.535 10000 EAR99 MALAYSIA 查看供货情况

Distributor availability ofST1S31PUR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 2840 1 Order Now
RS COMPONENTS EUROPE 790 1 Order Now
MOUSER WORLDWIDE 3191 1 Order Now
Farnell Element14 EUROPE 1004 1 Order Now

代理商库存报告日期: 2019-12-08

代理商名称

DIGIKEY

库存

2840

Min.Order

1

地区

WORLDWIDE Order Now

RS COMPONENTS

库存

790

Min.Order

1

地区

EUROPE Order Now

MOUSER

库存

3191

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

1004

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-12-08

获取样片

ST1S31D-R

封装

SO-8

包装类型

Tape And Reel

单价(US$)

0.471*

Distributor availability ofST1S31D-R

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 2475 1 Order Now
RS COMPONENTS EUROPE 45 1 Order Now
MOUSER WORLDWIDE 4903 1 Order Now

代理商库存报告日期: 2019-12-08

代理商名称

DIGIKEY

库存

2475

Min.Order

1

地区

WORLDWIDE Order Now

RS COMPONENTS

库存

45

Min.Order

1

地区

EUROPE Order Now

MOUSER

库存

4903

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-12-08

供货状态

批量生产

单价(US$)

0.471

数量

10000

ECCN (US)

EAR99

Country of Origin

CHINA

ST1S31PUR

封装

VFDFPN 8 3x3x1.0

包装类型

Tape And Reel

单价(US$)

0.535*

Distributor availability ofST1S31PUR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 2840 1 Order Now
RS COMPONENTS EUROPE 790 1 Order Now
MOUSER WORLDWIDE 3191 1 Order Now
Farnell Element14 EUROPE 1004 1 Order Now

代理商库存报告日期: 2019-12-08

代理商名称

DIGIKEY

库存

2840

Min.Order

1

地区

WORLDWIDE Order Now

RS COMPONENTS

库存

790

Min.Order

1

地区

EUROPE Order Now

MOUSER

库存

3191

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

1004

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-12-08

供货状态

批量生产

单价(US$)

0.535

数量

10000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

(*) 建议转售单价(美元)仅用于预算用途。如需以当地货币计价的报价,请联系您当地的 ST销售办事处 或我们的 经销商

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      3 A / 1.5 MHz step-down synchronous switching regulator based on the ST1S31 in DFN 3x3 package

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产品型号 供货状态 封装 等级规格 符合RoHS级别 Material Declaration**
ST1S31D-R
批量生产
SO-8 工业 Ecopack2
ST1S31PUR
批量生产
VFDFPN 8 3x3x1.0 工业 Ecopack2

ST1S31D-R

Package:

SO-8

Material Declaration**:

Marketing Status

批量生产

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

ST1S31PUR

Package:

VFDFPN 8 3x3x1.0

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

VFDFPN 8 3x3x1.0

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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