STEF512SRDB

批量生产
Design Win

Dual eFuse for 5 V and 12 V rails

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产品概述

描述

The STEF512SRDB 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 electronic fuses, one for the 5 V rail and one for the 12 V rail.

Thanks to the very low ON-resistance of the integrated power MOSFETs, the voltage drop from the main supply to the load is very low during normal operation. The 5 V channel provides a reverse blocking feature, preventing current flow to the input in case of brownout or shutdown.

The start-up time of each eFuse can be adjusted by the user, via two small soft-start capacitors, connected to the relevant pins. In this way the in-rush 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.

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 STEF512SRDB 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 open and the load is disconnected from the power supply. 5 V fixed LDO is available to supply external load up to 10 mA.

  • 所有功能

    • 5 V and 12 V channels into one chip
    • 25 V absolute maximum input voltage
    • Precise output overvoltage clamp
    • Fixed overcurrent protection trip points
    • Fast reverse current protection on 5 V channel
    • Thermal protection
    • Available in thermal latch (or auto-retry on request) version
    • Input undervoltage lockout
    • Adjustable output voltage slew rate for each channel by external capacitors
    • Integrated 40 mΩ power MOSFETs
    • 100 ms safety start-up delay
    • SAS disable and enable pins
    • 5 V embedded LDO
    • - 3 V transient protection
    • DFN10 (2 x 3 mm) package

EDA符号、封装和3D模型

STMicroelectronics - STEF512SRDB

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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**
STEF512SRDBPUR
批量生产
WFDFPN 2X3 10L COL 工业 Ecopack2

STEF512SRDBPUR

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WFDFPN 2X3 10L COL

Material Declaration**:

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Marketing Status

批量生产

Package

WFDFPN 2X3 10L COL

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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(*) 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