3 A synchronous 900 kHz step-down DC-DC converter with inhibit function based on the ST1S10 (DFN)

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  • The STEVAL-ISA044V6 demonstration board is based on the ST1S10 device assembled in a DFN package. The ST1S10 is a step-down DC-DC converter with the inhibit function optimized for powering high voltages in LCD applications and low voltages in digital-core HDD applications. It replaces the high-current linear solution when high power dissipation is an issue.

    It provides up to 3 A over an input voltage range of 2.5 V to 18.0 V, and synchronous rectification removes the need for an external Schottky diode. A high internal switching frequency (900 kHz) allows for the use of tiny surface-mount components, as well as a resistor divider to set the output voltage value. Only an inductor and 3 capacitors are required.
    The current-mode PWM architecture and stable operation with low-ESR SMD ceramic capacitors result in low output ripple. To maximize power conversion efficiency in light load, the regulator can work in burst mode automatically. The device can operate in PWM mode with a fixed frequency or synchronized to an external frequency. It switches at a frequency of 900 kHz when the SYNC pin is connected to ground or a fixed voltage (less than 5.5 V), and can synchronize the switching frequency between 400 kHz to 1.2 MHz from an external clock applied to the SYNC pin.
    A thermal shutdown circuit is integrated and activates at 150 °C. Cycle-by-cycle current limitation provides protection against shorted outputs. The quiescent current is less than 6 μA in the inhibit state.

    主要特性

    • Input voltage range: 2.5 V to 18.0 V
    • Max IOUT: 3 A
    • High internal switching frequency: 900 kHz
    • PWM mode operation with a fixed frequency or synchronized to an external frequency between 400 kHz and 1.2 MHz
    • Inhibit pin available
    • Quiescent current: < 6 μA in inhibit state
    • RoHS compliant

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STEVAL-ISA044V6 ST1S10
Active
39 1 EAR99 ITALY - 查看供货情况

Distributor availability ofSTEVAL-ISA044V6

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DIGIKEY WORLDWIDE 1 1 Order Now
FUTURE WORLDWIDE 5 1 Order Now
P&S ASIA/PACIFIC 1 1 Order Now

代理商库存报告日期: 2019-09-16

代理商名称

DIGIKEY

库存

1

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1

地区

WORLDWIDE Order Now

FUTURE

库存

5

Min.Order

1

地区

WORLDWIDE Order Now

P&S

库存

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1

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代理商库存报告日期: 2019-09-16

STEVAL-ISA044V6

核心产品

ST1S10

供货状态

批量生产

Unit Price (US$)

39.0*

Distributor availability ofSTEVAL-ISA044V6

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 1 1 Order Now
FUTURE WORLDWIDE 5 1 Order Now
P&S ASIA/PACIFIC 1 1 Order Now

代理商库存报告日期: 2019-09-16

代理商名称

DIGIKEY

库存

1

Min.Order

1

地区

WORLDWIDE Order Now

FUTURE

库存

5

Min.Order

1

地区

WORLDWIDE Order Now

P&S

库存

1

Min.Order

1

地区

ASIA/PACIFIC Order Now

代理商库存报告日期: 2019-09-16

Unit Price (US$)

39

数量

1

ECCN (US)

EAR99

Country of Origin

ITALY

Board production status

-

(*) 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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      DB1469
      3 A synchronous 900 kHz step-down DC-DC converter with inhibit function based on the ST1S10 (DFN)
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      DB1469

      3 A synchronous 900 kHz step-down DC-DC converter with inhibit function based on the ST1S10 (DFN)

硬件资源

    • 描述 版本 文档大小 操作
      Gerber files for STEVAL-ISA044V6 1.0
      109.53 KB
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      Gerber files for STEVAL-ISA044V6

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      STEVAL-ISA044V6 BOM 2.1
      7.5 KB
      PDF

      STEVAL-ISA044V6 BOM

    • 描述 版本 文档大小 操作
      STEVAL-ISA044V6 schematics 2.2
      37.82 KB
      PDF

      STEVAL-ISA044V6 schematics

出版刊物和宣传资料

    • 描述 版本 文档大小 操作
      eDesignSuite-The smart way to design your application 1.0
      842.88 KB
      PDF

      eDesignSuite-The smart way to design your application

法律

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      Evaluation products license agreement 1.6
      74.12 KB
      PDF

      Evaluation products license agreement

产品型号 供货状态 封装 等级规格 符合RoHS级别 WEEE Compliant 材料声明**
STEVAL-ISA044V6
Active
CARD 工业 Ecopack2 -

STEVAL-ISA044V6

Package:

CARD

Material Declaration**:

Marketing Status

Active

Package

CARD

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.