The PH300A280-12 from TDK Corporation is a DC to DC Converter with Input Voltage 4.8 to 14.4 V, Output Voltage 1 12 V, Output Current 1 25000 mA, Output Power 300000 mW, Operating Temperature -40 to 85 Degree C. Tags: Through Hole, Buck-Boost. More details for PH300A280-12 can be seen below.