Driving circuit for a light emitting diode lighting apparatus

A driving circuit of a light emitting diode (LED) lighting apparatus, comprising:

• a bridge diode rectifier configured to full-wave rectify an AC power and supply a pulsating-current driving power to an LED array including two or more LEDs connected in series;
• a driving data memory device in which central section driving data for driving the LEDs of the LED array are divided and stored for a plurality of sections within one cycle of the driving power and charging driving data for charging a charging capacitor in an outer section within one cycle of the driving power and outer section driving data for driving the LEDs of the LED array in the outer section are divided and stored for the respective sections;
• a drive controller configured to read the central section driving data, the charging driving data, and the outer section driving data from the driving data memory device and output the read data;
• a first D/A converter configured to convert the digital central section driving data and the outer section driving data, which are outputted from the drive controller, into an analog signal;
• a second D/A converter configured to convert the charging driving data into an analog signal;
• a constant current driving device unit comprising a plurality of constant current driving devices connected to taps of the LEDs of the LED array so as to selectively drive the LEDs in the central section and the outer section within one cycle of the driving power, according to an output signal of the first D/A converter;
• and
• a charging constant current driving device configured to charge the charging capacitor according to an output signal of the second D/A converter.