3 MHz switching — why the inductor shrinks
The TPS62238DRYT is a fixed-output 2.25 V step-down (buck) converter from TI, switching at 3 MHz. That switching frequency lets you use a 1 µH or smaller inductor and a 4.7 µF output cap, which fits the 6-UFDFN (1.45×1 mm) footprint into tight layouts — think wireless modules, sensor nodes, or any rail where board area is the constraint, not the inductor cost.
500 mA output — load budget check
Rated for 500 mA continuous output, this part covers a single MCU rail plus a few peripherals.
Input range and temperature grade
Input voltage spans 2.05 V to 6 V — a single Li-Ion cell (3.0–4.2 V) or a regulated 5 V rail both work.