The UCS2112-1-V/G4 is a dual USB port power switch and current monitor that provides precision overcurrent limiting, port power management, and dynamic thermal management. It operates from a 2.9V to 5.5V source voltage range and delivers up to 3.0A of continuous current per port with a low on-resistance of 40 mΩ. This version is configured with an SMBus address of 57h, allowing for programmable current limits and access to features like per-port charge rationing. Housed in a 20-pin 4x4 QFN package, it operates over a -40°C to +105°C temperature range, making it suitable for USB hubs, charging docks, and other host systems requiring robust power control.