Active high-side switch in a rework-friendly SOT-23-6
The MIC2019A-2YM6-TR: The non-inverting input and P-channel output configuration simplify drive logic — a logic high on the On/Off control pin turns the switch on without requiring an external Vcc supply, as the device is self-powered from the load rail.
The 170 mOhm typical Rds(on) at 5 V gate drive translates to about 140 mV drop at 900 mA and roughly 130 mW of conduction loss — manageable in the SOT-23-6 package if the PCB copper is adequate, but at the upper end of the thermal budget at 85°C ambient without airflow.
SOT-23-6 — hand-reworkable, but watch the pad
The SOT-23-6 package is small enough for hand rework with hot air, but the exposed pad (if present on the actual die-attach) is not always visible — the part has a single thermal pad on the bottom that should be soldered to a copper land on the PCB for best heat transfer. Pin 1 orientation is marked by a dot on the top of the package; verify the footprint matches the supplier device package drawing before layout.