The ACT4751M from Qorvo is a DC to DC Converter with Input Voltage 4.5 to 40 V, Output Voltage 1 5 V, Output Current 1 4000 mA, Operating Temperature -40 to 150 Degree C, Storage Temperature -55 to 150 Degree C. Tags: Surface Mount, Buck/Step down. More details for ACT4751M can be seen below.