BD8306MUV Switching Voltage Regulator ROHM Semiconductor BD8306MUV Switching Voltage Regulator is integrated with 2A MOSFET. This voltage regulator operates at an input voltage range of 1.8V to 5.5V and temperature range of -40°C and +85°C. The BD8306MUV voltage regulator is an high-efficient buck-boost DC to DC converter, constructed with just one inductor. This switching regulator produces buck-boost output voltage including 3.3V from two-cell or three-cell alkaline battery or one-cell lithium-ion battery.