Active production — 1 A synchronous buck in a 2x2 mm footprint
The TPS62290DRVR is a current-production step-down converter from Texas Instruments, switching at 2.25 MHz and delivering 1 A continuous output from a 2.3 V to 6 V input rail. Synchronous rectification is built in, so no external catch diode is needed; the internal low-side FET handles the return current and keeps efficiency above 90% across most of the load range.
Input range and adjustable output — 0.6 V to 6 V
The input voltage range spans 2.3 V to 6 V, covering single-cell Li-Ion down to its discharge floor and 5 V USB or regulated rails. Output is adjustable from a 0.6 V reference up to the input voltage, set by an external resistor divider — useful for powering low-voltage cores (1.2 V, 1.8 V) or I/O banks at 3.3 V. The single positive output is configured as a step-down (buck) topology, with the output voltage set by the feedback pin and the internal 0.6 V reference.
6-WSON package — thermal and layout considerations
The 6-WSON (2x2 mm) package with an exposed thermal pad requires a PCB landing pattern that ties the pad to a copper plane for heat spreading — the junction-to-ambient thermal resistance depends directly on the board copper area. The supplier device package is 6-WSON (2x2 mm), which is the same physical footprint as the 6-WDFN Exposed Pad — confirm the land pattern matches the recommended layout in the datasheet.