Active eFuse for 3.3V to 24V rails
The TPS259461ARPWR is an active-production electronic fuse from Texas Instruments that protects a downstream load from overcurrent and overvoltage on supply rails from 2.7V up to 23V. It delivers up to 5.5A continuous with a current-limit accuracy of ±6%, which means you can size the PCB trace and connector for 5.5A without the 20% guard band a looser-limit part would demand.
High-side sensing, small package
The device uses high-side sensing so the load sees a clean ground reference — no ground offset from the current-sense resistor. It comes in a 10-VQFN-HR package.
125°C junction temp covers hot environments
The ±6% accuracy holds across temperature, so the current limit doesn't drift open-loop as the board warms up.