TPS2500USB Power Switch with Boost Converter Texas Instruments TPS2500USB Power Switch with Boost Converter provides an integrated solution for meeting USB 5V power requirements from a 1.8V to 5.25V input supply. The TI TPS2500 USB power switch with boost converter features hi-speed USB compliant power output, output switch enable, current limit, and overcurrent fault reporting. The TI TPS2500 is ideal for portable applications using a single Li+ cell and USB hosts without native 5V supplies.