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Welcome to the technical Forum. First you need to do research on the circuit you are are designing. You would need to choose what type of dimming you are going to use. There are multiple options . Here is a link to some drivers: LED Drivers | Power Management (PMIC) | Electronic Components Distributor DigiKey
You can use the scroll bar to find the box for dimming options. Here us a post on differences in Dimming types:
This is where I would start and see what you want for your design