400 mA synchronous buck-boost for single-cell Li-ion to 5 V rails
The synchronous rectifier keeps efficiency high across the load range, which matters for battery-powered designs where every milliwatt counts during standby.
Programmable output — one BOM line, multiple rails
That reduces SKU count in production when the same design ships with different output voltages. The single output is positive-configuration; the 400 mA rating is the continuous current limit, so the load budget and PCB trace width should be sized for derating at elevated ambient temperatures.
No stock-holding claim — quoted per order.
10-SON (2.5x2.5) — compact footprint, exposed-pad thermal path
Housed in a 10-WFDFN exposed-pad package (2.5x2.5 mm body), the TPS63900DSKR is a surface-mount part.