A light emitting diode (LED) driving apparatus may include: a rectifying unit providing a rectified voltage; an LED array including at least one LED string including first to nth LEDs connected in series; a sink path controller providing first to (n−1)th sink path control signals according to a level of the rectified voltage; a sink path switching circuit unit including first to (n−1)th sink path switches performing a switching operation according to each of the first to (n−1)th sink path control signals; a voltage phase controller generating a phase-adjusted voltage; a source path controller providing first to (n−1)th source path control signals; and a source path switching circuit unit including first to (n−1)th source path switches performing a switching operation according to each of the first to (n−1)th source path control signals.