| 摘要 |
The present invention relates to an apparatus for operating a light emitting diode (LED). According to one embodiment of the present invention, the apparatus for operating a light emitting diode (LED) includes a first transistor; a voltage amplifier which amplifies voltage; a radiation current generation part; a first comparator for outputting a first pulse signal; a phase and frequency detector which detects the phase difference between the first pulse signal and the second pulse signal; and a charge pump which absorbs charges stored in the first capacitor. [Reference numerals] (AA) Input voltage |
