21 mOhm Rds(on) — what it buys the load-switch design
The IRF7328TRPBF is a dual P-channel HEXFET MOSFET in an 8-SOIC package.
Logic-level gate — one less driver stage
That removes a dedicated gate-driver IC from the BOM and simplifies the layout on a two-layer board.
Temperature range and package — where it goes
ROHS3 compliance is confirmed, so it passes the environmental screening for EU and North American builds without an exemption review.