GND1SW2SW3SW4IVINN5IVINP6VIN7EN/UVLO8OVLO9INTVCC10SYNC/SPRD11GND12VC13RT14DIM15FB16CTRL17VREF18SS19PWM20SHORTLED#21OPENLED#22IVINCOMP23ISMON24TG25ISN26ISP27GND28GND29