LoL!,...I didn't know if you just were using alcohol or something quick drying? I checked ebay and the stuff was lot of $$ and some said needed to ship ups could not send through usps. That was in your how to tutorial step #14 flux wash. Maybe I'll just take the boards in the shower with me after I get them all soldered up :spin3:
Has anyone made an LED driver based on LM3463 6 channel driver IC?
- Thread starter tomservo
- Start date
LOL- I'm not even sure if the "flux" we use out here is the same stuff you can get Ohio. Ours is probably squeezed from some "renewable" pine tree or something.....
Like I said earlier- you'll probably be able to find what you need locally, but you'll have to trudge through some snow to get it.:rollface:
007 read on the solder tube, box, roll, A lot of them these days are no clean or if they are you can use alcohol but I believe it has to be 99% pure (hard to find) Kmart pharmacy use to carry it or can order it or just go on line and order what ever you can get fluxcleaner is a good one also fluxclene.. 02 lives in the land that invented VOC's (Volatile organic compounds)I think. So know fluxclene for him
Or skip line 14 and call it a day.
You gotta clean them with something! LOL seriously that stuff leaves a sticky mess if it's not cleaned up. I'm wondering if a few products available from your local auto parts store would do the trick. Any product marketed for tree sap removal should do the job.
Rick-
The "no clean flux" is built in to the low melt solder paste. It's also in your Rosin core solder. Both solders will leave a small amount of residue on the PcB after the solder has been melted. This "leftover"flux will not harm the electronic components if left in place, but it can trap debris, which could cause a short, and it tends to oxidize and turn an ugly brown color with enough time. That's why I still wash the PcB.
Thanks, that makes more sense now. My original understanding of duty cycle in the datasheet was the PWM rate, until I was looking at the input PWM signal and the output voltage on a scope and saw they were the at the same frequency. While it actually refers to the internal duty cycle of the frequency (TON) the chip uses to regulate the current/voltage.
Have you had any problems with the 48v PSU? I have one here I bought for my project, but I have blown two drivers on the bench supply by supplying too much (55-56v?) voltage. I was thinking of getting a 36v one instead and adjusting it up to about 40v to be on the safe side.
Rick- use that flux on the solder pads for the A6211 chip. The application of additional flux will augment the rosin core flux already present in your roll solder + it will help the solder to flow under the chip and help make a solid connection between the PcB and the chip's thermal pad, when you flip the PcB over to solder in the thermal "via".
Yes- I was referring to the duty cycle or TON/TOFF time. The chip appears to run cooler with less TON vs. TOFF.
I haven't had any problems with my 48V supply. I'm using a Meanwell S320-48. I prefer using a 48V input voltage for all my testing, since that the maximum voltage the chip can handle. I designed the driver and chose component values with that voltage value in mind. "Think worst case scenario and design accordingly" LOL
Here's a copy of the design tool, just in case you don't have it. It includes estimated power losses & junction temps based on your chosen component values. It's a really handy tool to have.
TimmyD16
New member
Just read the whole thread, don't know why I've waited so long....
O2, your work is simply amazing, thank you on behalf of all hobbyists...
Do you happen to have a couple of those 5up boards still? Just the ones without any of the extras, just the drivers on the 10x10 board? If so shoot me a PM, I'd be more than interested.
Again, I'd just like to say thank you for all your hard work, we all appreciate it!
O2, your work is simply amazing, thank you on behalf of all hobbyists...
Do you happen to have a couple of those 5up boards still? Just the ones without any of the extras, just the drivers on the 10x10 board? If so shoot me a PM, I'd be more than interested.
Again, I'd just like to say thank you for all your hard work, we all appreciate it!
AU Contraire MON Fraire,.....Baume 40 degree high,....I can go to the store today:dance:
Product Lead Time Estimates
<table cellpadding="2" cellspacing="1" border="1"> <tbody><tr><td align="right">Digi-Key Part Number</td><td>620-1477-1-ND</td></tr> <tr><td align="right">Manufacturer Part Number</td><td>A6211GLJTR-T</td></tr> <tr><td align="right">Description</td><td>IC LED DRVR CONS CURR 8SOIC</td></tr></tbody></table>
<table cellpadding="2" cellspacing="1" border="1"> <tbody><tr><th>Quantity</th><th>Ship Date Estimate
(mm/dd/yyyy) </th></tr><tr><td align="center">100</td><td align="center">3/19/2014 - Delivery Date Past Due - Contact Digi-Key</td></tr> </tbody></table> Ship dates are approximate and subject to change.
<form action="/scripts/dksearch/dksus.dll?LeadTime" method="post"> <input name="quantity" value="100" size="9" maxlength="9" type="text"> </form>
Alternate packages available for620-1477-1-ND <table class="product-details-alternate-packaging" frame="void" rules="all" style="margin-top: .5em;" border="1"> <tbody><tr><th>Digi-Key Part Number</th><th>Manufacturer Part Number</th><th>Packaging</th><th>Quantity Available</th><th>Unit Price</th><th>Minimum Quantity</th></tr> <tr><td>620-1477-2-ND</td><td align="center">A6211GLJTR-T</td><td align="center">Tape & Reel (TR)
</td><td align="center">0
</td><td align="center">0.40600</td><td align="center">3,000</td></tr> <tr><td>620-1477-6-ND</td><td align="center">A6211GLJTR-T</td><td align="center">Digi-Reel®
</td><td align="center">0
</td><td align="center">Calculate</td><td align="center">1</td></tr> </tbody></table> 14:42:19 3/20/2014
:sad2: Soooooo........Rick? What do you make of this? Deja Vu?
<table cellpadding="2" cellspacing="1" border="1"> <tbody><tr><td align="right">Digi-Key Part Number</td><td>620-1477-1-ND</td></tr> <tr><td align="right">Manufacturer Part Number</td><td>A6211GLJTR-T</td></tr> <tr><td align="right">Description</td><td>IC LED DRVR CONS CURR 8SOIC</td></tr></tbody></table>
<table cellpadding="2" cellspacing="1" border="1"> <tbody><tr><th>Quantity</th><th>Ship Date Estimate
(mm/dd/yyyy) </th></tr><tr><td align="center">100</td><td align="center">3/19/2014 - Delivery Date Past Due - Contact Digi-Key</td></tr> </tbody></table> Ship dates are approximate and subject to change.
<form action="/scripts/dksearch/dksus.dll?LeadTime" method="post"> <input name="quantity" value="100" size="9" maxlength="9" type="text"> </form>
Alternate packages available for620-1477-1-ND <table class="product-details-alternate-packaging" frame="void" rules="all" style="margin-top: .5em;" border="1"> <tbody><tr><th>Digi-Key Part Number</th><th>Manufacturer Part Number</th><th>Packaging</th><th>Quantity Available</th><th>Unit Price</th><th>Minimum Quantity</th></tr> <tr><td>620-1477-2-ND</td><td align="center">A6211GLJTR-T</td><td align="center">Tape & Reel (TR)
</td><td align="center">0.40600</td><td align="center">3,000</td></tr> <tr><td>620-1477-6-ND</td><td align="center">A6211GLJTR-T</td><td align="center">Digi-Reel®
</td><td align="center">Calculate</td><td align="center">1</td></tr> </tbody></table> 14:42:19 3/20/2014
:sad2: Soooooo........Rick? What do you make of this? Deja Vu?
Just off the phone with them againnn. They said they have not been checked into their stock yet,...which also means they don't know if they have even reached their building yet. They said they should ship in a few days, I said 
will call back monday if I don't hear from them:angryfire:
will call back monday if I don't hear from them:angryfire:Just off the phone with them againnn. They said they have not been checked into their stock yet,...which also means they don't know if they have even reached their building yet. They said they should ship in a few days, I said
LOL- Let me know when you're done being patient. (hint hint... No supplier has them listed "in stock" right now.) I've got some in "my stash" that I'll slide your way - man. I'll be your "cousin strawberry" lol
Lol- "Cousin StrawBerry" was Tom Skerritt's character in Cheech&Chong's 1978 movie "Up in Smoke". He was the "dude that's got the stuff.... man".
Now- "I'm the dude that's got your stuff":bum:
