What this load switch does on your board
The TPS22924CYZPT is a single-channel, high-side N-channel MOSFET load switch from Texas Instruments. With a typical Rds(on) of 18.3 mOhm, the voltage drop at 2 A is under 40 mV — negligible for most 1.8 V and 3.3 V rails. The slew-rate controlled turn-on limits inrush current, and the integrated load discharge resistor pulls the output to ground when disabled. The 6-DSBGA package (1.39 mm x 0.89 mm) is a wafer-level chip-scale package — no exposed pad, no thermal vias needed for most loads.
Key ratings that matter for your BOM
The 2 A continuous current rating is the absolute maximum at 85°C ambient — derate if the board runs hot or the load is pulsed. The 18.3 mOhm Rds(on) is typical at 3.6 V input; expect it to rise ~25% at 1.8 V and another 20% at 85°C junction. No external Vcc supply is needed — the switch is self-powered from the load voltage pin. This simplifies routing but means the input voltage must be present and stable before the enable pin goes high.
ROHS3 compliant. Sourced per RFQ — confirm lead time and pricing against your BOM quantity.
Design-in checklist for the 6-DSBGA package
The 6-DSBGA package has a 1.39 mm x 0.89 mm body with 6 balls on a 0.5 mm pitch. The recommended land pattern is a 0.25 mm diameter NSMD pad with a 0.3 mm solder mask opening. No thermal pad — the die dissipates through the balls and the PCB copper. The part is rated for industrial environments — outdoor telecom cabinets, factory floor controllers, and automotive cabin modules (non-AEC-Q100).