The NPS4053GH from Nexperia is a Load Power Switch IC that is ideal for USB ports/hubs, laptops, docking stations, desktops, set-top boxes, HDTV, optical socket protection, and current limiting circuit applications. It requires an input voltage of 2.5 - 5.5 V and provides an output current of up to 2 A. This switch can precisely adjust the current limit over the range from 110 mA to 2.5 A and limits the output current to a constant current by using a constant current when the output load exceeds the current limit. It also includes an internal voltage comparator that disables the load switch when the output voltage is higher than the input, allowing it to protect devices on the input side of the switch. This power switch enables the FLG pin to indicate over-current, over-temperature, and reverse voltage conditions and uses a controller to turn ON/OFF the switch using control signals. It is available in a surface-mount package that measures 2 x 2 mm.