The AP66200QFVBW-13 from Diodes Incorporated is a DC to DC Converter with Input Voltage 3.8 to 60 V, Output Voltage 1 0.8 to 50 V, Output Current 1 2 A, Operating Temperature -40 to 125 Degree C. Tags: Surface Mount, Buck/Step down. More details for AP66200QFVBW-13 can be seen below.