Texas Instruments TPS2551DBVT

Description
The TPS2550/51 power-distribution switch is designed for applications where heavy capacitive loads and short-circuits are likely to be encountered. It incorporates a 100-mΩ, 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.

Features
Adjustable Current-Limit, 100 mA-1100 mA
Fast Overcurrent Response - 2 μS Typical
85-mΩ High-Side MOSFET (DBV Package)
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)
UL Listed - File No. E169910

Applications
USB Ports/Hubs
Cell phones
Laptops
Heavy Capacitive Loads
Reverse-Voltage Protection