Has anyone made an LED driver based on LM3463 6 channel driver IC?
- Thread starter tomservo
- Start date
Rick-
The A6211's seem to be next to impossible to locate/purchase right now. Until they're available, there's no reason to order the PcB's. Spend some time thinking about your upcoming build. Are there any changes that you'd like to make to your PcB design? Anything you'd like to add? I'll make whatever changes you'd like while we're stuck waiting on the parts.
Hey O2,...I think I have my build pretty well figured out how I'm going to do everything now. I've been thinking through this for almost a year. I originally was going to use Meanwell ELN-60, then the LDD's and now A6211's which I think are the best drivers for the DC's.(at least until tomorrow lol.)
As far as the board goes, I think I'd like to add the larger pads on both sides of the board for the small heatsink and the 6211to help with cooling the chip. I don't think I need pulldown resistors as the led can handle the default current. Nor do I need fan hookups or any other power on board. So just the larger pads for the 6211 you had mentioned earlier.
I want to get an order together from Digi Key for 50 6211's, Rsense resistors, molex 10 pin headers, cat5's, and anything else I need from them. I could use an updated BOM for a single driver. I going to build both 1400 and 700ma boards. I can figure quanities if you give me the parts for a single driver.
I can't wait to build a board and run some tests with my Jarduino controller,:bounce1:...I'll have to blow the dust off that thing lol. I know IteadStudio's will be at least 3 weeks before the boards get here. I really Need to scratch this itch!
---RickHey O2,...I think I have my build pretty well figured out how I'm going to do everything now. I've been thinking through this for almost a year. I originally was going to use Meanwell ELN-60, then the LDD's and now A6211's which I think are the best drivers for the DC's.(at least until tomorrow lol.)
As far as the board goes, I think I'd like to add the larger pads on both sides of the board for the small heatsink and the 6211to help with cooling the chip. I don't think I need pulldown resistors as the led can handle the default current. Nor do I need fan hookups or any other power on board. So just the larger pads for the 6211 you had mentioned earlier.
I want to get an order together from Digi Key for 50 6211's, Rsense resistors, molex 10 pin headers, cat5's, and anything else I need from them. I could use an updated BOM for a single driver. I going to build both 1400 and 700ma boards. I can figure quanities if you give me the parts for a single driver.
I can't wait to build a board and run some tests with my Jarduino controller,:bounce1:...I'll have to blow the dust off that thing lol. I know IteadStudio's will be at least 3 weeks before the boards get here. I really Need to scratch this itch!
Rick-
I'll add the copper heat sink solder pads to your design later today, and forward you the board files when I'm finished. I made an important discovery concerning the A6211. Evidently it has a more handsome identical twin called the "A6213". It's the Automotive grade version of the A6211. The two chips appear to be the identical package/ pin out and specs, but for reasons unknown they have different part numbers. According to Digikey, Allegro's factory lead time is 11 weeks for the A6211 (February) but the A6213 will ship again on Christmas eve. Here's a link-http://www.digikey.com/product-detail/en/A6213KLJTR-T/620-1480-1-ND/3844941
Keep an eye out for the chips to become available. They're priced at $1.95 each, but that's still cheap.... all things considered. I'm gonna grab 100 of them this time around. LOL
Thanks O2!!!...I'm going to build out all ten boards, so I'll need 50 X 6211. The 6313's come out to 1.57@ and the 6211 are .83@. I wonder if the 6213's are more robust somehow for the automotive industry?maybe their built for damp, humid,vibration type conditions? or is Allegro just sticking it to the auto industry.(same chip, higher price) there are a lot of different product manufactures that employ this pricing models.
Anyhow thanks,...I'll wait to see the new board.---Rick
Anyhow thanks,...I'll wait to see the new board.---Rick
You're welcome Rick. I'm betting that they're the same chip and Allegro's just giving the shaft to the automakers. LOL I should look to see if they offer a "Mil Spec" version too. I can't even imagine what they'd charge for that!:spin1:
Ya I bet!...an example, I was using AlageFix by API...there is a long thread here on RC about it. They sell a fresh water version and a saltwater version. The saltwater version cost more, but with some investigation from the RC guys, it came out that they are one in the same product.
I just checked DR F&S, and now the saltwater cost less...go figure. But they are both the Same product...just different label.
I bet the A6211's are the same animal no matter what numbers follow. Not sure, but one is about 1/2 the cost of the other.
maybe Allegro is pulling a fast one on the boys in Detroit.---Rick
I just checked DR F&S, and now the saltwater cost less...go figure. But they are both the Same product...just different label.
I bet the A6211's are the same animal no matter what numbers follow. Not sure, but one is about 1/2 the cost of the other.
maybe Allegro is pulling a fast one on the boys in Detroit.---RickAfter a full day of running the new mean well replacement H drivers @36v and 1.4ma all day on a Jarduino controller. Using the test LED function and over a full hour of manually ramping up and down I have to say these little guys I have are rock solid. I used a small cpu fan just blowing across the drivers from the side and had no heat of any kind you could touch them with your bare hand and not feel any heat. I sent some general pics to 02 but his 8up board with 4 drivers on it worked perfect. I put a LDD-1000H on the board next to the replacement driver and the LDD looks big compared to the new ones:dance:
Yeah, turns out the A6213's are now listed as shipping in MARCH now, and the 6211's on feb 5. I am SO screwed. My PCB's are arriving in the next couple days and I have dragged my feet ordering parts, and now there are no chips to be had anywhere.
Gonna call allegro on monday, I guess.
Gonna call allegro on monday, I guess.
No kidding- I've scoured every corner of the Web looking for more chips, and haven't found any. How does this happen? One minute, they're easy to find, and the next - NOTHING.
I just pulled the trigger on a 6' Makers Heat sink and a bunch of 50 and 100 watt leds for a new build. I'm guessing they'll just have to collect dust until more chips are available.:thumbdown This Sucks!
Ooooh that did turn out nice!
