2A buck in a hand-solderable 3x3 mm package
The TPS54228DRCT is a 2A synchronous step-down regulator from TI's D-CAP2™ and Eco-Mode™ family, switching at 700 kHz and fitting into a 10-VSON (3x3 mm) package with an exposed thermal pad. The 10-VFDFN package with exposed pad is hand-solderable with a fine-tip iron or hot-air station — no reflow oven required if you're careful with the thermal pad. The 0.5 mm pitch means a basic PCB with thermal vias under the pad will do the job.
Switching frequency and efficiency trade-offs
The D-CAP2™ architecture gives fast transient response, so output capacitance can be lower than with voltage-mode controllers. The synchronous rectifier means the low-side FET replaces the external Schottky diode, boosting efficiency especially at low output voltages. Eco-Mode™ pulse-skipping keeps quiescent current down at light load — good for battery-powered or always-on circuits.
ROHS3 compliant — no exemptions, so it ships into EU, UK, and other RoHS-regulated markets without paperwork headaches.