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.
- 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
Discover our range of eFuses (electronic fuses) for a wide range of applications.
STMicroelectronics - STEF12
(**) 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。
|产品型号||Order from distributors||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|
|STEF12PUR|| distributors |
| Buy from Distributor || |
|EAR99||NEC||Tape and Reel||DFN10 3X3||-40||125||CHINA|| |
Tape and Reel
Operating Temperature (°C)
Country of Origin: