STEF12

批量生产
Design Win

12 V线路的eFuse(电子熔断器)

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产品概述

描述

The STEF12 is an integrated electronic fuse optimized for monitoring output current and input voltage. Connected in series to a 12 V rail, it is capable of protecting the electronic circuitry on its output from overcurrent and overvoltage. The device has a controlled delay and turn-on time.

When an overload condition occurs, the STEF12 limits the output current to a predefined safe value. If the anomalous overload condition persists it goes into an open state, disconnecting the load from the power supply. If a continuous short-circuit is present on the board, when power is re-applied the E-fuse initially limits the output current to a safe value and then again goes into an open state.

The device is equipped with a thermal protection circuit. The intervention of the thermal protection is signal led to the board monitoring circuits through a signal on the Fault pin.

Unlike the mechanical fuses, which must be physically replaced after a single event, the Efuse does not degrade in its performance after short-circuit/thermal protection interventions and it is reset either by recycling the supply voltage or using the Enable pin.

The companion chip for the 5 V power rails is also available with part number STEF05.

  • 所有功能

    • Continuous current (typ): 3.6 A
    • N-channel on-resistance (typ): 53 mΩ
    • Enable/Fault functions
    • Output clamp voltage (typ): 15 V
    • Undervoltage lockout
    • Short-circuit limit
    • Overload current limit
    • Controlled output voltage ramp
    • Thermal latch (typ): 165 °C
    • Operating junction temp. - 40 °C to 125 °C
    • Available in DFN10 (3x3 mm) package
    • UL2367 Recognized - File N. E468771

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EDA符号、封装和3D模型

STMicroelectronics - STEF12

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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**
STEF12PUR
批量生产
DFN10 3X3 工业 Ecopack2

STEF12PUR

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DFN10 3X3

Material Declaration**:

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Marketing Status

批量生产

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DFN10 3X3

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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