| 摘要 |
<p>The present invention relates to an apparatus for driving a light emitting diode. The apparatus for driving the light emitting diode according to one embodiment of the present invention includes: a voltage dividing unit which divides a first reference voltage into a plurality of voltages, a reference voltage selecting unit which receives a dimming signal and the voltages from the voltage dividing unit, selects one of the voltages according to the number of pulses included in the dimming signal, and outputs the selected voltage as a second reference voltage, and a comparator which generates a pulse width modulation signal with a corresponding duty ratio according to the amplitude of the second reference voltage by applying the second reference voltage and a sawtooth signal to an input terminal, and outputting the pulse width modulation signal as a driving signal for the light emitting diodes. [Reference numerals] (51) Rear bumper storage; (61) Rear bumper grill; (66) Controller; (A) Storage status; (B) Withdrawal status</p> |
