14mOhm Rds(on) — conduction loss floor for the BOM
The TPS22921YFPR is a single-channel, high-side load switch from Texas Instruments, built around a P-channel MOSFET with a typical on-resistance of 14mOhm. That number sets the conduction loss at any load current: at 2A the resistive drop is 28 mV, which keeps the voltage headroom tight for the downstream regulator or load. The switch operates from 0.9V to 3.6V on the load side, covering single-cell Li-Ion through 3.3V logic rails without needing a separate bias supply.
6-DSBGA package — footprint and assembly reality
The TPS22921YFPR is supplied in a 6-bump DSBGA package, designated 6-DSBGA.