3 A in a 1.6 mm × 1.6 mm footprint
The TPS563231DRLT is a 3 A continuous-output synchronous buck regulator from Texas Instruments, packing the full power train into a SOT-563 package.
Active and compliant — no end-of-life watch needed
The SOT-563 package is widely second-sourced; if TI lead times stretch, a pin-compatible alternative from another vendor with the same footprint and switching frequency can be qualified without a board spin.
