Fixed 3.3V rail, 1.2 A — active and available
The TPS62082DSGT is a fixed 3.3V output synchronous buck regulator from TI's DCS-Control™ series, rated for 1.2 A continuous output. The 2 MHz switching frequency keeps the inductor small — typically a 2.2 µH or 4.7 µH part — while the DCS-Control™ architecture gives fast transient response without the usual output capacitor penalty. Input range runs from 2.3 V to 6 V, so it handles a single-cell Li-ion (3.0–4.2 V) or a 3.3/5 V intermediate rail cleanly.
Package and thermal — 8-WSON with exposed pad
The pad is the main thermal path — without a solid ground-plane connection the junction temperature climbs fast above 85 °C ambient. If the load is near the 1.2 A ceiling at high ambient, the thermal resistance of the board itself becomes the limit.