The TPS63036YFGR is a synchronous buck-boost regulator from Texas Instruments that delivers a 1A switch current at 2.4MHz switching frequency. That 1A is the internal switch current limit, not the continuous output — derate for the buck-boost topology: expect ~800 mA continuous output from a 3.3V rail when the input is near 2.5V, and less at the extremes of the 1.8V to 5.5V input range. The 2.4MHz frequency lets you use a 2.2 µH or smaller inductor, shrinking the total solution footprint on a 2-layer board.
ROHS3 compliant. No stock-holding claim; lead time confirmed at quote.
Synchronous rectification and adjustable output range
Synchronous rectification eliminates the external Schottky diode, keeping the BOM count low — two inductors and a handful of ceramic caps. The adjustable output spans 1.2V to 5.5V, set by a resistor divider. The single-output positive configuration delivers a regulated rail above, below, or equal to the input, which is the defining advantage of a buck-boost over a simple buck or boost for battery-powered designs where the battery voltage straddles the rail.