TPS2551-Q1是TI公司的一款精密可调节限流开关产品，TPS2551-Q1是可调节的具有电流限制的配电开关，本页介绍了TPS2551-Q1的产品说明、应用、特性等，并给出了与TPS2551-Q1相关的TI元器件型号供参考。
TPS2551-Q1 - 可调节的具有电流限制的配电开关 - 精密可调节限流开关 - USB电源和充电端口控制器 - TI公司（Texas Instruments，德州仪器）
The TPS2551 power-distribution switch is intended for applications in which heavy capacitive loads and short circuits are likely to be encountered, incorporating a 100-m, N-channel MOSFET in a single package. The current-limit threshold is user adjustable between 100 mA and 1.1 A via an external resistor. The power-switch rise and fall times are controlled to minimize current surges during switching.
The device limits the output current to a desired level by switching into a constant-current mode when the output load exceeds the current-limit threshold or a short is present. An internal reverse-voltage detection comparator disables the power-switch in the event that the output voltage is driven higher than the input to protect devices on the input side of the switch. The FAULT logic output asserts low during both overcurrent and reverse-voltage conditions.
- Qualified for Automotive Applications
- Adjustable Current-Limit: 100 mA to 1100 mA
- Fast Overcurrent Response: 2 µs (Typ)
- 85-m High-Side MOSFET
- Reverse Input-Output Voltage Protection
- Operating Range: 2.5 V to 6.5 V
- Deglitched Fault Report
- 1-µA Maximum Standby Supply Current
- Junction Temperature Range: –40°C to 125°C
- Built-in Soft-Start
- 15-kV ESD Protection (With External Capacitance)
- APPLICATIONS
- USB Ports/Hubs
- Cell Phones
- Laptops
- Heavy Capacitive Loads
- Reverse-Voltage Protection
