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The STEF05 is an integrated electronic fuse optimized for monitoring output current and input voltage. Connected in series to a 5 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 STEF05 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 signalled to the board monitoring circuits through a signal on the Fault pin. Unlike mechanical fuses, which must be physically replaced after a single event, the E-fuse 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 12 V power rails is also available with part number STEF12.
主要特性
- Continuous current (typ): 3.6 A
- N-channel on-resistance (typ): 40 mΩ
- Enable/Fault functions
- Output clamp voltage (typ): 6.65 V
- Undervoltage lockout
- Short-circuit limit
- Overload current limit
- Controlled output voltage ramp
- Thermal latch (typ): 165 °C
- Uses tiny capacitors
- Operating junction temp. - 40 °C to 125 °C
- Available in DFN10 (3x3 mm) package
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图片 产品型号 制造商 描述 
STEVAL-IFP021V1 -- 基于STEF05和STEF12电子熔断器的5 V和12 V电力线保护 产品型号基于STEF05和STEF12电子熔断器的5 V和12 V电力线保护
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样片和购买
| 产品型号 | 从分销商订购 | 从ST订购 | 供货状态 | ECCN (US) | ECCN (EU) | 包装类型 | 封装 | 温度（ºC） | Country of Origin | Budgetary Price (US$)*/Qty | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小值 | 最大值 | |||||||||||
| STEF05PUR | 2 distributors | 样片和购买 立即购买 |
批量生产
|
EAR99 | NEC | Tape And Reel | DFN10 3X3 | -40 | 125 | CHINA | 0.596 / 1k | |
