Light emitting diode driving apparatus and method for driving the same

The invention relates to a light emitting diode driving apparatus and a method for driving the same. According to example embodiments, a light emitting diode driving includes a power converter configured to convert a power supply voltage into a lamp driving power supply voltage in response to a voltage control signal, first and second light emitting diode strings supplied with the lamp driving power supply voltage, a first slave driver circuit configured to detect headroom voltages of the second light emitting diode strings and to output a first slave headroom error signal in response to the detected headroom voltages, and a master driver circuit configured to detect headroom voltages of first light emitting diode strings and to output a master headroom error signal in response to the detected headroom voltages of the first light emitting diode strings. The master driver circuit may be configured to output the voltage control signal in response to the master and the first slave headroom error signals.