Patent ID: 7999491
Filing Date: 2011-08-16
Classification: H05B

Abstract:
1. 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 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: