Oshpark Projects

As more DIY drivers become available it is becoming significantly harder to select the right one for project if you are not following the thread constantly.
If I may suggest organising drivers by led type they are meant for or by input voltage, led voltage and led current!
Then, when someone is trying to find 2S cell driver for MTG2 led, he can do that quickly…

The organization, such as it is, is based loosely on driver type and then size. There’s a fair amount io duplication now but I have no wish to delete links without a request from the author or notification of a nonfunctional link. Many of these drivers are used for many different LEDs often with different voltages and all you do to use a different voltage led is look for where to put the Zener diode and 200 ohm resistor. It can certainly get overwhelming and reorganization is not unlikely but it’s assumed that if you have a question you will ask it and it will get answered. Most authors are good about starting threads to discuss the finer points so that such details aren’t buried here but it still happens. Such is the internet.

If someone would like to assume responsibility for this thread, change the format to table form, or whatever. I’d be happy to copy the entire OP in edit mode and send it as a pm. You would then be able to start anew with a blank thread. Maybe SB could figure out a way for another member to access/edit the op instead. IDK.

I was looking for this 2 things:

- high current single 18650 driver for XML2 (4.2V in and ~3.2v out, up to 8A but I would be thrilled with 6A) and

  • high current dual 18650 driver for MTG2/XHP type leds (8.4V in, 6V out)

I selected this 5 boards:
9A Zener Modified MT-G2 Driver copy
16mm 12x7135 Slave copy
BLF 17DD-Zener Revision 2 copy
BLF17-Linear-Z copy
[untested] 17mm A17DD-SO8 w/ ALT LAYOUT v043 copy

no particular light in mind but I prefer them to be 17mm dia (first one is larger, I know, but I did not find 17mm alternative) and AttinyA13 based drivers so I could flash modes.

Nah…the LDO regulator (the 7135) is fine, the cap is for input/output smoothing, from a battery power source it shouldn’t be an issue

For both lights I would choose the A17DD-SO8, for the last one with a zener diode.
One sided, no 7135 chips, the FET is widely available and high current depending on battery.

OK, thanks for your input fingers, in my country actually it is not that easy to find SMD stuff if you want to buy 1 piece so I have to check first what components I can get, fingers crossed :bigsmile: …

Here are some 10mm & 12mm Single-Sided FET drivers. The 10mm has been built and tested thoroughly, both inside and outside of a flashlight. These give you all of the performance of "big" FET driver in a tiny package, while staying single-sided.

10mm

12mm

For programming the MCU, check out the MMU programming PCB in the OP.

Woohoo!

You sound very happy being out of a job building small drivers RBD. Where will I get my fix now on miniaturization?

Nice work! Two questions:

-A very useful size for a couple of AAA-flashlights (Ultrafire M5, Ultrafire LZZ-06 and clones) is 11mm as well, can you make that one too?

-I do not have the knowledge to sort that out, can anyone find out an ebay-link to a LFPAK33 FET for this driver? I can not judge if one is suitable, and all I seem to find are ones that are over 3 dollars each.

The 12mm board is just a fluffed up version of the 10mm one, so it can be ground down to whatever size you need, down to the 10mm original size.

I know, and making and uploading a 11mm version if many flashlights use that size is still a good idea :-)

Well, yeah, there is that, I guess! :wink:

PSMN2R4-30MLDX by NXP

I believe Richard uses it as well.

Edited with correct link. sorry

For anyone else I'd say no, but for you--I'll do it.

It is already done, but Oshpark's system is having trouble again. I'll try uploading again later.

Like Dale said, I'd go with the PSMN2R4-30MLDX.

djozz, are you sure about the Ultrafire LZZ-06 driver being 11mm, my Jexree Mini that i thought was as far as the body & head goes (they have only different reflectors) would be the exact same light is a 11,6mm driver.

I looked up this FET on Ebay and found no sellers that sell them for less than 3 dollars a piece plus $4.50 shipping :-(

To search Ebay succesfully I -unfortunately- was forced to look into all those different FET-packages :tired: . In the end I found this graphic somewhere in a NXP pdf. Perhaps this saves some other folks a bit of what I have gone through:

Thanks for a 11mm version :-)

I would have to take another look at it when I'm home.

Ok, found it. I looked into an old thread of mine: https://budgetlightforum.com/t/-/25476 and the driver of the LZZ-06 is even 13mm (press-fit), I got it all wrong, I remembered that the driver that I used was a mm too narrow, but it was a 12mm board that I used, not 10. Sorry Richard for doing the work, I promise that will keep looking out for a 11mm driver flashlight to build this 11m board in .

Ok, that is interesting, that means they are more different than i thought.

The only difference i thought was the that the LZZ-06 had a OP reflector & the Jexree Mini had a SMO one.