Load-switch selection for 2 A rails
The TPS22916CNYFPR is a single-channel P-Channel load switch from Texas Instruments, designed for general-purpose high-side power gating up to 2 A continuous output. The load voltage range spans 0 V to 5.5 V. Slew-rate controlled turn-on limits inrush current into capacitive loads, which is the primary reason a designer picks this part over a discrete P-channel FET. Reverse current protection prevents back-feed when the output bus holds charge after the input drops — useful in hot-swap or OR-ing topologies.
Supply rails and control logic
The switch is controlled by a non-inverting input with a supply voltage (Vcc/Vdd) range of 1 V to 5.5 V. This means the enable logic threshold tracks the bias rail, not the load — a 1 V or 5.5 V GPIO can drive the EN pin directly. The 1:1 input-to-output ratio means one control line gates one power rail.
Package, footprint, and sourcing posture
The TPS22916CNYFPR is supplied in a 4-DSBGA package. The DSBGA is a chip-scale package with no exposed thermal pad; the primary heat path is through the solder balls into the PCB copper.