Appartus for driving the lighting emitting device and method of thereof

PURPOSE: An LED driving apparatus and a driving method thereof are provided to constantly maintain the average current flowing through each channel by controlling a driving power duty of the channel by comparing the current detected in each channel with the reference wave. CONSTITUTION: At least one LED channel is connected to an LED light source(110) in parallel. A current detection unit(120) is arranged on the bottom of the LED channel of the LED light source and detects the current flowing through the LED channel. A channel current control unit(140) compares the current detected in the channel with the reference wave and generates the control signal controlling the average current of the channel.