The BD9D300MUV is a buck DC/DC with built-in integrated power FET which can convert input voltages up to 17 V (such as a 14.4 V battery system) with output current up to 3 A. This part has 100% duty cycle operation and has various protection features to ensure high reliability operation of the system. Main uses include the conversion of voltages directly from 12 V systems, 2-cell lithium-ion battery systems, or even from 5 V USB power supplies.