The DX6210 is a single-power stage, isolated andprimary side offline LED lighting regulator whichachieves high power factor . The proprietaryreal-current control method can control the LEDcurrent accurately from the primary side information . It can significantly simplify the LEDlighting system design by eliminating the secondaryside feedback components and the opto-coupler .The DX6210 integrates active power factorcorrection and works in Quasi Resonance mode(QRM) in order to reduce the MOSFET switchinglosses to provide a high efficiency solution forlighting applications. The external programmableline voltage compensation provides a more preciseoutput current throughout the universal AC inputvoltage range. The leading edge blanking circuiton the CS/FB input removes the signal glitch andresults in reduced external components and systemcost.