Fixed 3.3V rail from a single cell — what the input range buys you
The 200mA switch current rating is the internal switch limit — the actual output current available at 3.3V depends on the input voltage and conversion efficiency. From a 1.5V input, expect roughly 80-100 mA output before the switch cycle limit is hit.
Switching frequency and efficiency trade-off
Switching at up to 2MHz lets the design use small inductors (1 µH to 4.7 µH range) and ceramic capacitors, shrinking the total solution footprint. The synchronous rectifier eliminates the external Schottky diode, saving a component and improving efficiency at light loads.
Package and supply posture
The supplier device package is SC-70-6; the listing also references 6-TSSOP, SC-88, SOT-363 as equivalent case codes. The product status is Active, meaning no end-of-life or last-time-buy risk for current production runs.