Single-channel high-side switch with 16 mOhm Rds(on)
The BTS5016SDAAUMA1 is a single-output high-side N-channel power switch from Infineon's PROFET series, rated for a continuous output current of 5.5 A and a load voltage range of 5.5 V to 20 V. Fault protection includes current limiting (fixed), open-load detection, over-temperature shutdown, and over-voltage clamp. The auto-restart feature means the switch re-tries after a thermal fault once the die cools — useful for driving incandescent lamps or motors where the inrush pulse is brief and the load self-recovers. The status flag output gives the MCU a clean logic-level signal when the switch is in fault, so the firmware can log the event or cycle power.
PG-TO252-5-11 package and thermal land pattern
The package is PG-TO252-5-11, the standard DPAK with four leads plus the exposed tab. The 5.5 A max output is achievable only when the tab is soldered to a reasonable copper pour; in a cramped two-layer board with a small tab pad, expect to derate to 3-4 A depending on ambient. ROHS3 compliant with no exemption issues for lead-free reflow profiles.
The PROFET series is a mature, broadly deployed family, so supply continuity through Infineon's distribution channel is stable.
