CONTROL CIRCUIT OF LIGHT-EMITTING DIODE LIGHTING APPARATUS

摘要

Disclosed is a control circuit of an LED lighting apparatus having a dimming function. The control circuit provides a current path corresponding to light emitting states of LED channels in response to a rectified voltage, and performs dimming by controlling a current amount of the current path in response to a dimming control signal provided as an analog signal or digital signal.

主权项

1. A control circuit of an LED lighting apparatus which is divided into a plurality of LED channels, the control circuit comprising a control unit provides a current path corresponding to turn-on states of the LED channels in response to a rectified voltage, generates a control pulse corresponding to an external dimming control signal therein, and controls a current amount of the current path according to the control pulse.