That chip's specs look interesting. It would be a good choice for a lot of led applications that require long strings of leds w/ a low drive current. I tend to use chips with a higher current capacity, like the OnSemi CAT4101 but I guess there's always a trade off to be made in that regard. I haven't seen anything capable of both high current and voltage except the LM3409, but that's a buck controller and it's not that simple to employ.
Are you going to solder up a PCB for the chips? I create my own all the time, using design software on my computer. If you'd like help, just let me know and I can design one for you. Here's a photo of one that I created recently. It's a 6 channel 150 watt led driver with an integrated Arduino micro-controller/DS1307 "real time clock". I'll be using 3 of these over my 225 to drive and control 90 3 watt leds.
i am supposed to get 5 of them... i can send 2 your way to play with if they ever show.
i have just never worked with drivers like this... and am not really 100% sure how to proceed. i have not really had a chance to look into what i might be able to do with them either.
right now i just finishing up a 10x 1w white, 8x 90mW blue 48" light... but its just all resistors and wall wort power supplies.
It looks like a really easy chip to use. I have to read the pdf again, but it looks like you'll only need a resistor or two to get it to work. You could place all 5 chips on one pcb and drive at least 60 one watt leds ( 12 per chip ) with just a 48 volt 3 amp supply.
