主权项 |
1. An LED driving device comprising:
a light source unit including first to nth LED groups by DC power and mutually sequentially connected in series; and a driving control unit including first to nth input terminals sequentially connected to output terminals of the first to nth LED groups, respectively, and sensing currents flowing to a ground through the first to nth input terminals to generate information regarding a driving section to control magnitudes and a path of the currents flowing in the light source unit, wherein the driving control unit includes a driving section detecting block which comprises a finite state machine (FSM) having different states according to the driving sections. |