Low-voltage P-channel for 12V rails — what the 7 mOhm Rds(on) means
The headline figure is the 7 mOhm maximum on-resistance at a 4.5 V gate drive — that is the spec that decides conduction loss in a 12 V load switch or battery OR-ing application. A 7 mOhm Rds(on) at 16 A dissipates under 1.8 W at rated current, which keeps the junction within the 2.5 W package limit in an 8-SOIC footprint. The part is designed for surface-mount assembly in an 8-SOIC (0.154" body width) package, supplier device package 8-SO.
Gate drive and switching — 5 V logic compatible
The drive voltage range spans 1.8 V to 4.5 V for minimum and maximum Rds(on), and the gate threshold is 900 mV max at 250 µA. The 91 nC total gate charge at 4.5 V is the figure the switching-loss calculation uses; at 100 kHz switching frequency the average gate-drive current works out to about 9 mA, well within a standard microcontroller GPIO or a small gate-driver IC. Input capacitance Ciss is 8676 pF at 10 V drain bias. This is a moderate-Qg part — not a fast-switching device, but fine for load switching, soft-start, or low-frequency PWM up to a few tens of kilohertz.