LED DRIVING DEVICE, LED DRIVING METHOD, AND COMPUTER READABLE RECORDING MEDIUM

摘要

PROBLEM TO BE SOLVED: To provide an LED driving device.SOLUTION: The LED driving device includes: a DC-DC converter which provides drive voltage to a plurality of LED arrays; a plurality of switching sections which are connected in series to each of the plurality of LED arrays and can change the size of drive current flowing in each of the plurality of LED arrays; and a control section which calculates the drive current in each of the plurality of LED arrays and duty cycle in the switching section which is corresponding to each of the plurality of LED arrays and controls the plurality of switching sections on the basis of the calculated drive current and the calculated duty cycle, so that each of the switching sections may operate within a preset headroom voltage range.