The MA01-05D12 from Total Power International is a DC to DC Converter with Input Voltage 4.5 to 5.5 V, Output Voltage 1 12 V, Output Current 1 0.8 to 42 mA, Output Power 1000 mW, Output Voltage 2 -12 V. Tags: Through Hole, Boost/Step Up. More details for MA01-05D12 can be seen below.