Input range and load capacity — the fit decision
The TPS26623DRCT is an electronic fuse (eFuse) from Texas Instruments that protects a downstream load from overcurrent and overvoltage faults. Its 4.5V to 57V input range covers common industrial rails (12V, 24V, 48V) and automotive battery voltages, including the cold-crank dip and load-dump transient without requiring an external clamp. Rated for 880 mA continuous output current, this part suits point-of-load protection for sensors, PLC I/O modules, and communication interfaces that draw under that ceiling. The ±5% accuracy on the current-limit threshold means the designer budgets a ±44 mA window around the set point — within tolerance or it fails.
Temperature grade and package — board integration
The -40°C to 125°C operating range qualifies the TPS26623DRCT for under-hood automotive and outdoor industrial enclosures where the ambient temperature cycles through the full automotive temperature band. The 10-VSON (3x3 mm) package with exposed pad (10-VFDFN) requires a thermal land on the PCB to pull heat from the die — the datasheet layout recommendation for the pad via pattern is the reference for the copper area. The exposed pad is the primary thermal path — without a solid via array under it, the junction temperature rises above the 125°C limit at full load in still air.
ROHS3 compliant, no exemption issues for EU markets.