STEF512SRX

批量生产
Design Win

用于5V和12V电源轨的双电子保险丝,具有反向电流阻断功能

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产品概述

描述

The STEF512SRX 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 inrush 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 brown-out or shutdown.

The start-up time is internally controlled by a dedicated slew rate circuit. 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.

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 is turned on.

When an overload condition occurs, the STEF512SRX 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 is disconnected from the power supply.

Load current on each channel can be accurately monitored by reading the signal on the IMON_5/12 pin.

  • 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 for both channels
    • Reverse current protection on 5 V channel
    • Thermal protection
    • Available in auto-retry version
    • Input undervoltage lockout
    • Adjustable output voltage slew rate
    • Integrated 45 mΩ power MOSFETs
    • SAS disable pin
    • Current monitor pin selection
    • Current monitor output in a single pin for both rails
    • DFN10 (2 x 3 mm) package

EDA符号、封装和3D模型

STMicroelectronics - STEF512SRX

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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**
STEF512SRXCPUR
批量生产
WFDFPN 2X3 10L COL 工业 Ecopack2

STEF512SRXCPUR

Package:

WFDFPN 2X3 10L COL

Material Declaration**:

PDF XML

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

样片和购买

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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