I am looking for a LED that I can use on my first underwater ROV so that I have enough light to record video under water. I am using a 12V battery so I am looking for a bright LED chip around 9-12V / around 400 lumens.
I am trying to figure out whether LEDs need a separate driver or whether they have a built in driver. I have a hard time figuring this out. What are the things to look for?
for example, I've read that there are different technologies like SMB, Cree, COB. Do any of these "by definition" include the LED driver?
Or is it regardless of the LED, and do I always need a separate driver for these small LED chips?