there is provided a light emitting diode driving apparatus for controlling the light emitting diode driving according to a feedback signal input through a positive feedback loop , the light emitting diode driving apparatus including : a power converting unit switching input power and supplying driving power to at least one light emitting diode ; a feedback unit detecting and feeding back a voltage of the driving power of the power converting unit ; and a controlling unit including a comparator having a negative terminal receiving a reference voltage having a set voltage level and a positive terminal receiving the detected voltage from the feedback unit and comparing the reference voltage with the detected voltage to control a switching of the power converting unit according to a comparison result .