3 A synchronous 900 kHz step-down DC-DC converter with inhibit function based on the ST1S10 (Power SO-8)

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  • The STEVAL-ISA044V5 is a demonstration board based on the ST1S10 device assembled in a Power SO-8 ePad 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

样片和购买

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STEVAL-ISA044V5 ST1S10
批量生产
39.0 1 EAR99 ITALY - 查看供货情况

Distributor availability ofSTEVAL-ISA044V5

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 8 1 Order Now
P&S ASIA/PACIFIC 1 1 Order Now
MOUSER WORLDWIDE 7 1 Order Now

代理商库存报告日期: 2019-10-13

代理商名称

DIGIKEY

库存

8

Min.Order

1

地区

WORLDWIDE Order Now

P&S

库存

1

Min.Order

1

地区

ASIA/PACIFIC Order Now

MOUSER

库存

7

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-10-13

立即购买

STEVAL-ISA044V5

核心产品

ST1S10

供货状态

批量生产

单价(US$)

39.0*

Distributor availability ofSTEVAL-ISA044V5

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 8 1 Order Now
P&S ASIA/PACIFIC 1 1 Order Now
MOUSER WORLDWIDE 7 1 Order Now

代理商库存报告日期: 2019-10-13

代理商名称

DIGIKEY

库存

8

Min.Order

1

地区

WORLDWIDE Order Now

P&S

库存

1

Min.Order

1

地区

ASIA/PACIFIC Order Now

MOUSER

库存

7

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-10-13

单价(US$)

39

数量

1

ECCN (US)

EAR99

Country of Origin

ITALY

Board production status

-

(*) 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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技术文档

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      DB1460
      3 A synchronous 900 kHz step-down DC-DC converter with inhibit function based on the ST1S10 (Power SO-8)
      1.1
      338.2 KB
      PDF
      DB1460

      3 A synchronous 900 kHz step-down DC-DC converter with inhibit function based on the ST1S10 (Power SO-8)

硬件资源

    • 描述 版本 文档大小 操作
      Gerber files for STEVAL-ISA044V5 1.0
      109.61 KB
      ZIP

      Gerber files for STEVAL-ISA044V5

    • 描述 版本 文档大小 操作
      STEVAL-ISA044V5 BOM 2.1
      7.17 KB
      PDF

      STEVAL-ISA044V5 BOM

    • 描述 版本 文档大小 操作
      STEVAL-ISA044V5 schematics 1.0
      21.99 KB
      PDF

      STEVAL-ISA044V5 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-ISA044V5
批量生产
CARD 工业 Ecopack2 -

STEVAL-ISA044V5

Package:

CARD

Material Declaration**:

Marketing Status

批量生产

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.