Found 4 alternatives for RT8496GS by Richtek USA Inc.. Pmic Led Drivers — 14-SOIC (0.154", 3.90mm Width).
IC LED DRIVER 1CH HV 14SOIC
LM3445 TRIAC DIMMABLE OFFLINE LE
IC LED DRIVER CONTROLLER 14SOP
TRIAC DIMMABLE, PRIMARY SIDE CON