Hi - nice find for the POL voltage driver.
In a perfect world, you would ideally use a current regulated driver for an LED, not a voltage regulated driver. There are a number of reasons for this, but the basic ones are:
a) The Vf of LEDs is a curve, not a constant
b) The Vf shifts from LED to LED
c) The Vf is fairly temperature sensitive, so as the part warms up, the current will increase for a given voltage.
That being said, its not so easy to find a 10 amp current driver for an SST-90, so some imperfections are sometimes necessary.
I have set up LEDs using either batteries or voltage regulators putting out about 3.5 volts, run it through the LED, then in series with this, a 1 ohm resistor. It worked for me, but I was not driving this big of a horse of an LED either.
You can set the Vout of that POL regulator with a trim pot rather than a fixed resistor, which helps you to sort of creep up to the desired Vo setting for the desired current.
I guess the basic answer is, if you are willing to accept a few LEDs burning out while you gain experience with this hobby, it is acceptable. If you plan to buy just one LED, drive it near the max 10 amps, and have a perfect experience, then you might need to wait a bit more for some of the 10 amp current regulated driver solution to become available. There are several in development, but none released that I know of.
BTW - its max out is 10 amps, so perhaps you should only plan to use 5 - 7 amps of that capability.
