Patent ID: 11963273
Assignee: LX SEMICON CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 0:
1. A light emitting diode (LED) driving circuit comprising:
a plurality of current channels electrically connected to LEDs and for delivering driving currents of the LEDs;
a dimming control circuit configured to individually control the driving currents of the plurality of current channels;
a first switch circuit configured to adjust a size of a driving current of a LED based on a duty ratio of a pulse width modulation (PWM) signal; and
a second switch circuit configured to receive a pulse amplitude modulation (PAM) signal and to adjust the size of the driving current of the LED, wherein
the dimming control circuit is configured to receive an LED driving control signal from an external circuit and determine control timing of the driving currents of the plurality of current channels.