BP5823CH is a linear LED constant current driver chip dedicated to wall switch color adjustment. It integrates a high-voltage MOSFET and JFET high-voltage power supply function. It is mainly used to drive high-voltage and low-current LED light strings powered by mains electricity. Since no magnetic elements are required, the LED driver can achieve small size, long service life and comply with EMI regulations. By turning on and off the wall power switch, according to the configuration of the SEL pin and by adjusting the peripheral CS resistor, BP5823CH achieves color adjustment effects of different powers.