Synchronous rectification with inhibit, 0.7 A, 1.7 MHz adjustable, step-down switching regulator

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  • The ST1S12 is a step down DC-DC converter optimized for powering low-voltage digital cores in HDD applications and, generally, to replace the high current linear solution when the power dissipation may cause high heating of the application environment. It provides up to 0.7 A over an input voltage range of 2.5 V to 5.5 V. A high switching frequency (1.7 MHz) allows the use of tiny surface-mount components. In addition to the resistor divider to set the output voltage value, only an inductor and two capacitors are required. Moreover, 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 thermally protected and the current is limited to prevent damage due to accidental short-circuit. The ST1S12 is available in the TSOT23-5L package.

    主要特性

    • Step-down current mode PWM (1.7 MHz) DC-DC converter
    • 3% DC output voltage tolerance
    • Synchronous rectification
    • Fixed output voltage 1.2 V, 1.8 V, and ADJ (available on request 1.5 V, 2.5 V and 3.3 V)
    • Enable function
    • Internal soft start
    • Typical efficiency: > 90%
    • 0.7 A output current capability
    • Not switching quiescent current: max 650 μA over temperature range
    • RDSONtyp. 250 mΩ and 400 mΩ
    • Uses tiny capacitors and inductors
    • Operative junction temp. -40 °C to 125 °C
    • Available in TSOT23-5L package

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ST1S12G18R TSOT23-5L Tape And Reel
Active
0.343 10000 EAR99 - Check Availability

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代理商库存报告日期: 2019-07-16

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ST1S12GR TSOT23-5L Tape And Reel
Active
0.343 10000 EAR99 MALAYSIA Check Availability

Distributor availability ofST1S12GR

代理商名称
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DIGIKEY WORLDWIDE 10398 1 Order Now
FUTURE WORLDWIDE 2988 1 Order Now
ARROW EUROPE 10 0 Order Now
MOUSER WORLDWIDE 3840 1 Order Now
RUTRONIK EUROPE 3000 3000 Order Now

代理商库存报告日期: 2019-07-16

代理商名称

DIGIKEY

库存

10398

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1

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WORLDWIDE Order Now

FUTURE

库存

2988

Min.Order

1

地区

WORLDWIDE Order Now

ARROW

库存

10

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0

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MOUSER

库存

3840

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RUTRONIK

库存

3000

Min.Order

3000

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EUROPE Order Now

代理商库存报告日期: 2019-07-16

Buy now
ST1S12G12R TSOT23-5L Tape And Reel
Active
0.343 10000 EAR99 MALAYSIA Check Availability

Distributor availability ofST1S12G12R

代理商名称
地区 库存 最小订购量 Third party link
MOUSER WORLDWIDE 3533 1 Order Now

代理商库存报告日期: 2019-07-16

代理商名称

MOUSER

库存

3533

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-07-16

Buy now

ST1S12G18R

Package

TSOT23-5L

Packing Type

Tape And Reel

Unit Price (US$)

0.343*

Distributor availability ofST1S12G18R

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 1281 1 Order Now
MOUSER WORLDWIDE 2920 1 Order Now
Farnell Element14 EUROPE 3000 1 Order Now

代理商库存报告日期: 2019-07-16

代理商名称

DIGIKEY

库存

1281

Min.Order

1

地区

WORLDWIDE Order Now

MOUSER

库存

2920

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

3000

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-07-16

Marketing Status

Active

Unit Price (US$)

0.343

Quantity

10000

ECCN (US)

EAR99

Country of Origin

-

ST1S12GR

Package

TSOT23-5L

Packing Type

Tape And Reel

Unit Price (US$)

0.343*

Distributor availability ofST1S12GR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 10398 1 Order Now
FUTURE WORLDWIDE 2988 1 Order Now
ARROW EUROPE 10 0 Order Now
MOUSER WORLDWIDE 3840 1 Order Now
RUTRONIK EUROPE 3000 3000 Order Now

代理商库存报告日期: 2019-07-16

代理商名称

DIGIKEY

库存

10398

Min.Order

1

地区

WORLDWIDE Order Now

FUTURE

库存

2988

Min.Order

1

地区

WORLDWIDE Order Now

ARROW

库存

10

Min.Order

0

地区

EUROPE Order Now

MOUSER

库存

3840

Min.Order

1

地区

WORLDWIDE Order Now

RUTRONIK

库存

3000

Min.Order

3000

地区

EUROPE Order Now

代理商库存报告日期: 2019-07-16

Marketing Status

Active

Unit Price (US$)

0.343

Quantity

10000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

ST1S12G12R

Package

TSOT23-5L

Packing Type

Tape And Reel

Unit Price (US$)

0.343*

Distributor availability ofST1S12G12R

代理商名称
地区 库存 最小订购量 Third party link
MOUSER WORLDWIDE 3533 1 Order Now

代理商库存报告日期: 2019-07-16

代理商名称

MOUSER

库存

3533

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-07-16

Marketing Status

Active

Unit Price (US$)

0.343

Quantity

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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技术文档

    • 描述 版本 文档大小 Action
      DS5661
      Synchronous rectification with enable, 0.7 A, 1.7 MHz fixed or adjustable step-down switching regulator in TSOT23-5L
      5.0
      325.2 KB
      PDF
      DS5661

      Synchronous rectification with enable, 0.7 A, 1.7 MHz fixed or adjustable step-down switching regulator in TSOT23-5L

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      AN2728
      ST1S12 small synchronous buck converter
      1.2
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      PDF
      AN2728

      ST1S12 small synchronous buck converter

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型号 Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
ST1S12G12R
Active
TSOT23-5L 工业 Ecopack2
ST1S12G18R
Active
TSOT23-5L 工业 Ecopack2
ST1S12GR
Active
TSOT23-5L 工业 Ecopack2

ST1S12G12R

Package:

TSOT23-5L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

TSOT23-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

ST1S12G18R

Package:

TSOT23-5L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

TSOT23-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

ST1S12GR

Package:

TSOT23-5L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

TSOT23-5L

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.