What this 3A buck does with a 1.5x1.5 mm footprint
The TPS62826DMQT is a synchronous step-down (buck) regulator delivering 3A continuous output from a 2.4V to 5.5V input rail. The adjustable output goes from 0.6V up to 4V, set by a resistor divider on the FB pin. The 6-VSON-HR package measures 1.5x1.5 mm — that's the entire regulator plus its power stage in a footprint smaller than a 0805 resistor. The exposed thermal pad under the package is the main heat path; the board copper area under it sets the effective thermal resistance. For 3A continuous at high ambient, plan a solid ground plane pour on the top layer under the part.
Where the 125°C junction rating matters
Lifecycle status is Active per Texas Instruments.