Disclosed is an LED protection circuit using a one-shot vibrator. The LED protection circuit includes an LED module; an LED load-open detection circuit for detecting a voltage applied to the LED module to vary a reference potential; a latch circuit for maintaining a latch state according to the reference potential of the LED load-open detection circuit; a current limit circuit for receiving an output signal from the latch circuit to output a first signal; an LED load connection detection circuit for varying the reference potential through the first signal to output a second signal; a trigger input circuit connected to the LED load connection detection circuit for outputting a third signal using the second signal; and a one-shot vibrator for outputting a fourth signal of a square waveform during a predetermined time when the third signal is input.
申请公布号
US2013106292(A1)
申请公布日期
2013.05.02
申请号
US201213662168
申请日期
2012.10.26
申请人
LG INNOTEK CO., LTD.;LG INNOTEK CO., LTD.
发明人
KOO GWAN BON;YOON DONG KEUN;LEE JONG HYUN;LEE JIN WOO;CHO JAE BEOM;JO JI WOONG