BP5001 is a dimming interface conversion chip that can convert the 0/1-10V signal at the dimming port and the voltage signal generated by the resistance value into a PWM signal. This PWM signal can be directly used to control the LED driver chip or, after optocoupler isolation, realize the dimmable application of isolated applications. BP5001 can flexibly adjust the frequency of PWM through an external frequency setting pin. BP5001 can realize compatibility with various passive 0/1-10V dimmers through an external dimmer current setting pin.