Patent ID: 7999491

Claim:
An LED lighting control integrated circuit comprising: a first nonvolatile memory; a plurality of first lookup tables stored in the first nonvolatile memory comprising a current setting and trimming lookup table for providing a plurality of current setting and trimming calibration signals based on spacing or pitch of LED disposition of an LED lighting module; a first timer for counting an elapsed operating time of the LED lighting module each time after power-on; a second nonvolatile memory coupled to the first timer; a power-on-time-related lookup table, stored in the second nonvolatile memory, for providing a plurality of power-on-time-related compensation signals based on the elapsed operating time; a signal processing unit, coupled to the first nonvolatile memory and the second nonvolatile memory, for generating a plurality of sets of control signals based on the plurality of current setting and trimming calibration signals in conjunction with the power-on-time-related compensation signals; a pulse-width-modulation (PWM) signal generating module coupled to the signal processing unit for generating a plurality of sets of PWM signals, the PWM signal generating module comprising: a plurality of PWM signal generators for generating the plurality of sets of PWM signals based on the plurality of sets of control signals respectively; and a driving module coupled to the PWM signal generating module for providing a plurality of sets of currents to the LED lighting module, the driving module comprising: a plurality of driving circuits coupled to the plurality of PWM signal generators respectively for providing the plurality of sets of currents to the LED lighting module based on the plurality of sets of PWM signals respectively.