It'll be the freshwater one. Which is the first one you posted the specs to. Also I've seen where people appear to wire them in a series with one set of drivers and one power supply. How would that work if you know?
For each channel just add the voltage (v(f)) at the drive current of your choice.
since you won't actually know the EXACT V(f) unless you measure it you can use a few assumptions..(V(f) of 3.125 @700mA for the CREE's)
Each channel is 5 diodes in series 2 parallel rows..Voltage will equal sum of tne series row, drive current per "group" will be 1/2 of the array current.
to put 3 chips in series but one channel per driver on an ldd would require
3.125x5 x3 chips = 46.875 plus LDD required differential of 3V = 49.875
Actually you may be able to squeeze out a good functional array at really low drive current. At 500mA (really 250ma per group of 2) V(f) is way below 3V (say 2.8) =45V
Sooo underdriving 3 chips, w/ each channel in series on each chip "should" work just fine w/ 500mA drivers..
Each diode will only be running at .66W though..Kind of a waste..
Depending on bin you could get 90-150lumens/ watt BUT X .66
The reason the chip is rated at 1500mA is the /2 thing. Each branch of one channel is only running at 750mA...
Personally If I wanted to run 3 in series w/ LDD's I'd pick LDD-L or H at 600mA -1000mA
(300mA per 5 diodes). That at least gets you close to 1W/chip
The "on paper" max current based on 3 chips in series, 48V PS ((45 effective) is 3V max V(f) at slightly under 600mA (1200/2)
UNFORTUNATELY there are no LDD's (H or S) that does 1500mA at the voltage you need for in series.
you should be able to "do the math" for 2 in series)
To "simplify" everything and not need such a large voltage PS
you could just use a 24V supply, 15 drivers of your choice under 1500mA and be done w/ it..
1000mA driver will drive each chip to 1.45W. Using LDD-L's you could go to 1500mA and use the 18V (21V total)number plus a bit to get 24V
your 100W chip is at 72.5W really..The ind chips ARE capable of 5W but at that arrangement and density it is not practical..
It would require a 2800mA driver...+/- a few mA. Heat would be horrible..
So your choices are more drivers/higher output/more heat/more wiring (you can use the 48V, doesn't really matter much after hitting the V(f) requirement, slight efficiency on the PS if you don't "waste" too many volts) or less drivers, series channels/less wiring/less heat/lower output..