055UMC_DCDC_01 is high-efficiency step-down DC-DC switching buck converter targeted for operation from 2.0V to 3.6V input voltage. It is able to supply circuits with 1.2V and up to 50 mA average output current. The DC-DC converter contains adjustment of output current limit, overload protection, and under voltage-lockout circuit. During startup time DC-DC converter works in the soft start mode, which provides the gradual increase of the output voltage.