Buck-boost regulator with a 1V to 30V input window
The ADP1110AR-12 is a fixed 12V output step-up/step-down switching regulator from the ADP1110 series, built around a buck-boost topology. It accepts an input voltage from 1V up to 30V, making it viable for single-cell battery supplies, unregulated wall adapters, or multi-rail industrial buses. The 70 kHz switching frequency is fixed, which simplifies inductor selection but means the external components are sized for that rate — not a MHz-range switcher. The single positive output is non-synchronous, so the design relies on an external Schottky diode for the rectification leg.
The 8-SOIC footprint is common and well-supported in reflow profiles. The bulk packaging option means it ships in tubes or loose pieces, not tape-and-reel — factor that into your pick-and-place setup if you are running high-volume lines.