The TPS22915BYFPR is a single-channel, high-side N-channel load switch from Texas Instruments, rated for 2 A continuous output and a load voltage range of 1.05 V to 5.5 V. The 37 mOhm typical on-resistance sets the conduction loss: at 2 A, expect roughly 74 mV drop and 148 mW dissipation inside the package — manageable for the 4-DSBGA if the PCB copper carries the heat. The part includes load discharge and slew-rate control, which limits inrush current when the switch turns on and pulls the output to ground when off — useful for sequencing FPGA core rails or sensor supplies where a floating output could cause latch-up.
The load voltage spans 1.05 V to 5.5 V, covering 1.2 V, 1.8 V, 2.5 V, 3.3 V, and 5 V rails from a single device. The switch does not require a separate Vcc/Vdd supply; it is self-powered from the load input, simplifying the BOM by one rail.
Package and footprint — DSBGA placement reality
The 4-XFBGA, DSBGA package with a 4-bump array uses a 0.5 mm pitch typical for this family. The small bump diameter and tight pitch mean the stencil aperture and solder-paste volume must be controlled to avoid bridging or head-in-pillow defects.