52 mOhm at 11 A — the conduction-loss floor for a 100 V switch
The on-resistance is specified at 52 mOhm maximum with 11 A drain current and 10 V gate drive — that is the conduction-loss number you use for the thermal budget in a motor drive, DC-DC converter, or battery-management switch.
TO-220 Full Pack — the isolated-tab advantage
The TO-220 Full Pack (TO-220AB Full-Pak) package has a fully isolated metal tab. No mica washer or thermal compound pad needed between the tab and the heatsink — the isolation is built into the moulded body. That saves assembly time and eliminates one failure point in high-vibration environments like pumps or industrial fans. The 54 W maximum power dissipation at case temperature assumes a decent heatsink; the junction can run up to 175°C. Gate charge is 94 nC at 10 V, and input capacitance is 1400 pF at 25 V drain. For a 100 kHz hard-switched converter you need a gate driver that can source and sink that charge fast enough to keep switching losses in check — figure a driver with at least 2 A peak output.