7 A electronic fuse in a 2x2 mm VQFN
The TPS25974LRPWR is a 7 A electronic fuse from TI, packing a 2.7 V to 23 V input range into a 10-VQFN-HR package that measures just 2 mm by 2 mm. It integrates the pass FET, current-sense, and thermal protection into one surface-mount IC.
Rated for 7 A continuous output — this is the steady-state current the internal FET can carry without exceeding the junction temperature limit, assuming adequate PCB copper for heat spreading. The ±10% accuracy on the current-limit threshold means a 7 A setpoint can trip as low as 6.3 A or as high as 7.7 A; design the downstream load to stay below the minimum trip point. The 2.7 V to 23 V input range covers common intermediate bus rails (3.3 V, 5 V, 12 V, 24 V minus margin) and supports hot-swap or power-sequencing applications where the input voltage sags during startup.