The AP3015A from Diodes Incorporated is a DC to DC Converter with Input Voltage 1 to 12 V, Output Voltage 1 34 V, Output Current 1 0.1 mA, Operating Temperature -40 to 85 Degree C, Storage Temperature -65 to 150 Degree C. Tags: Surface Mount, Boost/Step Up. More details for AP3015A can be seen below.