STEF512PUR

批量生产
Design Win

Dual electronic fuse (eFuse) for 5 V and 12 V rails

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产品概述

描述

The STEF512PUR is an integrated dual electronic eFuse, 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 eFuse, 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.

  • 所有功能

    • 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

EDA符号、封装和3D模型

STMicroelectronics - STEF512PUR

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质量与可靠性

产品型号 Marketing Status 等级规格 符合RoHS级别 材料声明**
STEF512PUR
批量生产
WFQFPN 10 2X3X0.75 工业 Ecopack2

STEF512PUR

Package:

WFQFPN 10 2X3X0.75

Material Declaration**:

PDF

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

样片和购买

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STEF512PUR
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STEF512PUR 批量生产

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STEF512PUR

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(*) 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