The BD9A201FP4-LBZ from ROHM Semiconductor is a DC to DC Converter with Input Voltage 2.7 to 5.5 V, Output Voltage 1 0.8 to 3.85 V, Output Current 1 2000 mA, Operating Temperature -40 to 85 Degree C. Tags: Through Hole, Buck/Step down. More details for BD9A201FP4-LBZ can be seen below.