500 mA high-side USB switch in SOT-23-5
The TPS2051CDBVR: The switch is self-powered from the load voltage (Vcc/Vdd not required), simplifying the bill of materials for USB ports on motherboards, hubs, and peripheral devices.
Protection set and control interface
Fault protection includes fixed current limiting, overtemperature shutdown, reverse-current blocking, and undervoltage lockout (UVLO) — the part handles hot-plug inrush and shorted loads without external sense resistors. A non-inverting On/Off interface (active-high enable) and a status-flag output report overcurrent or overtemperature conditions to the host controller. The load-discharge feature pulls the output low when the switch is disabled, preventing a floating downstream rail.