BU33DV5G Datasheet, ROHM

* Synchronous Boost DC/DC Converter(PWM) 10mA @Vout=3.3V, Vin=1.8V
* UVLO-detect Voltage:1.65V(Typ.)
* UVLO-release Voltage:1.75V(Typ.)
* Thermal Shutdown.

The BU33DV5G devices provide a power supply solution for products powered by either two-cell alkaline, NiCd or NiMH, or one-cell Li-ion or Li-polymer battery. Output currents can go as high as 10mA while using two alkaline, and discharge it down to 1.