The TPS22915CYFPR is a single-channel, high-side N-channel load switch from Texas Instruments, rated for 2 A continuous output with a typical on-resistance of 37 mOhm. It operates over a 1.05 V to 5.5 V load voltage range. This is useful for power-rail sequencing in multi-supply systems. The interface is a single On/Off control pin with non-inverting input logic — a high level turns the switch on. No external Vcc supply is needed; the gate drive is generated internally from the input voltage.
Parametric fit — Rds(on), current, and voltage margins
At 2 A and 37 mOhm typical Rds(on), the conduction loss is roughly 148 mW (I²R), which the DSBGA-4 package must dissipate without exceeding the 85°C ambient limit. The 37 mOhm figure is a typical value at 25°C; actual on-resistance rises with junction temperature, so the designer should budget for higher loss at elevated ambient. The 1.05 V minimum load voltage means the switch can pass a 1.2 V core rail, but not sub-1 V supplies like 0.9 V or 0.8 V. For those, a lower-voltage-rated load switch is needed.
Package and PCB integration
The small footprint demands careful PCB layout — the input and output traces must be wide enough to carry 2 A without excessive IR drop, and the thermal vias under the package help conduct heat to the board. The package is surface-mount and RoHS3 compliant. Tape & Reel and Cut Tape options are available for different procurement quantities.
It is ROHS3 compliant. For BOM-line commitment, the part is sourced to order against your quantity.