Low-voltage switching workhorse in a SOT-23-6 footprint
It is a logic-level device — the 30 mOhm max on-resistance is specified at just 4.5 V gate drive, and it still turns on hard with 2.5 V at the gate.
At 4.5 V gate drive the max Rds(on) is 30 mOhm with 6.5 A drain current — that is a conduction loss of about 1.3 W at full load, which the 2 W package power dissipation can just handle with good board copper. The total gate charge is 22 nC at 5 V; switching at 100 kHz the gate driver needs to source and sink roughly 2.2 mA average, well within a standard MOSFET driver's capability. Input capacitance is 1310 pF at 15 V Vds, so the switching edges are clean enough for most 100–500 kHz converters without excessive cross-conduction.
The SOT-23-6 (Micro6) package keeps the board footprint small — about 3 mm × 3 mm — but the 2 W power dissipation rating assumes the copper pad on the PCB acts as the heatsink. For continuous loads above 3 A, a 1-inch-square copper pour on the drain pad is the difference between a 125 °C junction and a 150 °C one.