| 摘要 |
<p>PURPOSE: An LED driving circuit is provided to secure LED driving quality and an LED protection function by using the feedback of the output voltage of an LED string in transmitting the driving current. CONSTITUTION: A first comparator(130) compares a reference voltage with the output voltage of a first LED string and outputs the result. A second comparator(140) compares the output voltage of the first LED string and the output voltage of a second LED string. A current drive part(160) transfers the direct current generated according to the output of the first comparator to the first LED string and the second LED string.</p> |
