The TPS63002DRCT is a synchronous buck-boost converter that delivers a fixed 5V output from an input range spanning 1.8V to 5.5V. The 1.6A switch current rating sets the practical output current ceiling at 5V. With a typical Li-ion input of 3.6V, the converter can deliver roughly 1A at 5V before hitting the switch current limit — enough for a Raspberry Pi Zero, a single USB load, or a 5V sensor cluster. The 1.25MHz to 1.5MHz switching frequency keeps the inductor in the 2.2µH to 4.7µH range, small enough for space-constrained designs, and pushes the fundamental switching noise above the audio band.
The synchronous rectifier improves efficiency at light loads, which matters for battery-powered designs where every milliwatt of quiescent loss shortens standby time.