MLS3535B chip regulating current on LED lighting PCB?

[badrequest400]

I have an aluminium PCB with LED lights on it and I was hoping it is the kind which has a chip which regulates the current according to a current-setting resistor. There is an SOP8 chip with the marking MLS3535B but I'm not sure that it is a current regulating chip; at least, it doesn't seem like the others I've seen in light bulbs. The resistor next to each chip is 20R which is a higher value that found in other bulbs for current-setting resistors and also it's 1206 which is bigger than you'd expect for such a role as well.

What else are these chips likely to be? Could the current/power of the light be reduced by increasing the value of those resistors to, say, 40R?

[ajb]

It pretty much has to be some sort of all-in-one LED driver IC, since there's bugger all else on the board, and it's running directly from what looks like rectified mains input.  It should be pretty easy to trace out the circuitry since that's a single sided metal PCB, that might give you some hints.  Changing the resistor value likely would change the programmed current, but without a datasheet it's impossible to say what the relationship is. 

[badrequest400]

Okay, thanks. I measured the current consumed to be 130 mA with the resistors from the factory. I will make a small change first and observe the change in current so I can be sure about the direction I'm moving before I try again with a bigger change in value. Desoldering will be annoying with it being an aluminium PCB so I guess the easiest thing to do will be to try adding a 470R resistor in parallel.