TPS2051B Power Distribution Switch IC

TPS2051B is a USB power-distribution switch IC designed by Texas Instruments. It provides controlled power delivery from USB or DC supply lines and protects the system from overload, short-circuit, and over-temperature conditions. Its integrated high-side MOSFET ensures efficient switching with minimal power loss. Commonly used in laptop motherboard USB power rails to control and protect USB ports and peripheral power output.

Product Name :- TPS2051B Power Distribution Switch IC

Manufacturer :- Texas Instruments

Input Voltage Range :- 2.7V to 5.5V

Output Current :- Up to 0.5A continuous

Switch Type :- High-Side MOSFET Switch

Protections :-

• Short-circuit

• Current-limit

• Thermal shutdown

• Reverse current blocking

Control Signal :- Enable pin, fault reporting

Main Use :- USB port power control in laptops, docking & charger boards