STEF12 Electronic fuse for 12 V line
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 signalled 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 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 the 5 V power rails is also available with part number STEF05
技术特性
- 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
- Uses tiny capacitors
- Operating junction temp. - 40 °C to 125 °C
- Available in DFN10 (3x3 mm) package
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应用原理图
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STEF12 订购信息
| 订购型号 |
产品状态 |
美金价格 |
数量 |
封装 |
包装形式 |
温度范围 |
材料声明 |
| STEF12PUR |
Active |
|
1000 |
VDFPN 10 3x3x1.0 |
Tape And Reel |
|
STEF12PUR |
DATASHEET
| 描述 |
版本 |
大小 |
| STEF12 : DS7315: Electronic fuse for 12 V line |
4 |
1198KB |
APPLICATION NOTES
| 描述 |
版本 |
大小 |
| AN4069: 5 V and 12 V power line protection based on STEF12 and STEF12 electronic fuses |
1 |
808KB |
BOARDS AND TOOLS
| 型号 |
描述 |
| STEVAL-IFP021V1 |
5 V and 12 V power line protection based on STEF12 and STEF12 electronic fuses |
