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  • The STEF512PUR is an integrated dual electronic fuse, designed to protect circuitry on the output from overcurrent and overvoltage events, in those applications requiring hot swap operation and in-rush current control.

    The device embeds two independent electronic fuses, one for the 5 V rails and one for the 12 V rails. Thanks to the very low ON-resistance of the integrated power FETs, the voltage drop from the main supply to the load is very low during normal operation.
    The startup time can be adjusted by the user for each e-fuse, via two small soft-start capacitors, connected to the relevant pins.
    In this way the inrush current at startup can be kept under control.
    The maximum load current is precisely limited, by utilizing a sense FET topology, to factory-defined values (3 A for 5 V output and 4 A for 12 V output).
    The device also provides precise overvoltage clamp for each channel, preventing the load being damaged from power supply failures, and undervoltage lockout (UVLO), assuring that the input voltage is above the minimum operating threshold, before the power device is turned on.
    When an overload condition occurs, the STEF512PUR limits the output current to the predefined safe value. If the anomalous overload condition persists, the device goes into thermal shutdown, the internal switch is opened and the load disconnected from the power supply.
    In the QFN10 package two current monitor pins are available, providing continuous information on the load current for each channel.

    主要特性

    • 5 V and 12 V channels into one chip
    • Output over voltage clamp
    • Fixed current limit : 3 A on 5 V, 4 A on 12 V
    • Latched-off thermal protection
    • Input undervoltage lockout
    • Adjustable output voltage slew rate for each channel
    • Integrated 40 mΩ Power FETs
    • SAS disable pin
    • Current monitor output
    • QFN10-2x3 package

样片和购买

产品型号
封装
包装类型
供货状态
ECCN (US)
Country of Origin
Approximate Price (US$)* / Qty
从ST订购
从分销商订购
STEF512PUR WFQFPN 10 2X3X0.75 Tape And Reel
批⁠量⁠生⁠产
EAR99 - 1.44 没有经销商,请联系我们的销售办事处

STEF512PUR

封装

WFQFPN 10 2X3X0.75

包装类型

Tape And Reel

Approximate Price (US$)* / Qty

1.44

供货状态

批⁠量⁠生⁠产

Budgetary Price (US$)* / Qty

1.44

ECCN (US)

EAR99

Country of Origin

-

(*) 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

适合您的资源

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技术文档

    • 描述 版本 文档大小 操作
      DS13182
      Dual electronic fuse for 5 V and 12 V rails
      2.0
      1.81 MB
      PDF
      DS13182

      Dual electronic fuse for 5 V and 12 V rails

出版刊物和宣传资料

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      Linear and Switching Voltage Regulators Selection Guide 3.0
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      PDF

      Linear and Switching Voltage Regulators Selection Guide

    • 描述 版本 文档大小 操作
      electronic Fuse quick Reference Guide 1.0
      2.67 MB
      PDF

      electronic Fuse quick Reference Guide

产品型号 供货状态 封装 等级规格 符合RoHS级别 材料声明**
STEF512PUR
批量生产
WFQFPN 10 2X3X0.75 Industrial Ecopack2

STEF512PUR

Package:

WFQFPN 10 2X3X0.75

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

WFQFPN 10 2X3X0.75

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此,它们可能不是100%适用于特定的设备。有关特定设备的信息,请联系 销售支持

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