The TPS259230DRCR from Texas Instruments is an integrated electronic fuse (eFuse) designed for hot-swap and overcurrent protection on 5 V power rails. The ±8% current-limit accuracy means the threshold is tight enough to avoid nuisance trips during inrush charging of downstream bulk capacitance, yet precise enough to protect the load from a sustained overload. In a 5 A design, the trip point sits between 4.6 A and 5.4 A — that window matters when the load draws 4.8 A steady-state and you need headroom for transients without blowing the fuse.
Package footprint and thermal design — 10-VSON with exposed pad
The TPS259230DRCR comes in a 10-VFDFN exposed pad package (3 mm × 3 mm VSON). Without adequate pad attachment, the package cannot dissipate the heat from a sustained 5 A pass-through, and the internal thermal shutdown will cycle the output. The cut-tape option is available for prototyping or low-volume builds. No special handling beyond standard MSL moisture sensitivity — confirm the bake requirements from the reel label before reflow.
Temperature range — industrial, not automotive
This part is not rated for under-hood automotive environments — if the design requires AEC-Q100 qualification or a 105°C+ ambient, look at TI's automotive-grade eFuse family instead.