"USB Power Adapter 
 The XZ1101 is an integrated 100mΩ power switch for 
 self-powered and bus-powered Universal Series Bus (USB) 
 applications. A built-in charge pump is used to drive the 
 N-channel NMOSFET that is free of parasitic body diode to 
 eliminate any reversed current flow across the switch when it is 
 powered off. Its low quiescent supply current (23μA) and small 
 package (SOT23-5) is particularly suitable in battery-powered 
 portable equipment.Several protection functions include soft start to limit inrush current during plug-in, current limiting at 1.5A to meet USB power requirement, and thermal shutdown to protect damage under over current conditions. "