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FREE DIY open source BOOST driver!!! Tested & working!!

osmosis321 said:
Tin can and propane torch... hmm.. I have a propane torch and a coffee can.. maybe I should try that..http://laserpointerforums.com/images/smilies/biggrin.gif

Just kidding, it's not just you.

True. I'd only do it on small boards with very few IC's, and only on prototypes or hobby stuff.

I doubt I'd sell them, for the very reasons you've mentioned. It's mostly for personal projects. This is for people who DIY, not for business.
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That's what I was trying to convey in Post #1224...:beer:


Jerry

You can contact us at any time on our Website: J.BAUER Electronics
 
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Ltc3113

I'm planning to design my own laser driver, and will keep it open source.

http://cds.linear.com/docs/Datasheet/3113f.pdf

I'm soliciting opinions. What I see here is a buck-boost driver capable of 3A/5.5V, 96% max efficiency, internal soft-start, and a typical app external component count of 10.

I also happen to know that the M140 drinks/drops max 2A/3.6V (PLEASE correct me if I'm wrong, as always) which would make this IC a good foundation for the design.

Only issue I see so far is price - they start at over $5 ea.
 
I've been talking to Ben about making and selling these boost minis. I'm shooting for an assembled resell price at or under 10.
Depending on cost of parts and if I can get them assembled by a company, might get lower...
 
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Mohrenberg said:
I've been talking to Ben about making and selling these boost minis. I'm shooting for an assembled resell price at or under 10.
Depending on cost of parts and if I can get them assembled by a company, might get lower...
Click to expand...

Only way you'll get that kind of value for money is if you do at least a thousand at a time.

And the ben-boost mini can't handle an M140(?)
 
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something to consider.. a company I've worked with before would be able to provide assembled boards at a reasonable cost. If you provide a BOM with digi-key part #'s they'll source the components, saves you having to physically send them anything.

The guy who runs the NA division owes me a bit of a favor, might be able to get free shipping out of him. If you want, pack up the gerbers and BOM and upload, I'll ask him for a quote.
 
Been looking at the ben-boost -- the LM3410 is a fantastic choice, and Element14 currently has LM3410's on sale for $1.50 @ Qty 1000. Digi-key's current price is $1.59 @ Qty 3000. That's a good deal!
 
Sourced out the parts and got the price of the driver to a very reasonable price. Ordered 500 boards tonight as well as a stencil for solder paste.

I plan to be more lenient with the output ranges this time as well, I'm going to shoot for 25mA increments in the output choices. After 1A it will probably go up to 100mA increments though.

Pricing will be about ~$10 retail for the assembled drivers. May do a pre-sale type of thing at an even lower price ($6 or $7?) To help pay for the total order.

We'll see how it all unfolds. I'm going to wait until the boards are closer to being here before I decide on any of that.
 
Mohrenberg said:
Sourced out the parts and got the price of the driver to a very reasonable price. Ordered 500 boards tonight as well as a stencil for solder paste.
Click to expand...

Where did you buy from?

and what did you pay? (PM me if you don't want to blab it publicly)
 
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Does not the LM3410 have 2.8A typical switch current? That's what the datasheet says. In your original post you talk about doubling up to get 2A, however the LM3410 should be able to do it with a single unit.
 
First, what a great contribution! Second, I have downloaded all the files but how to I upload them to OSHPark?

Thanks!
 
just go to oshpark and upload the .brd file, follow the instructions and place the order.
 
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