Anti-woot! The off-time cap is stuck directly onto a MCU pin so it’ll be a pain to reflash.
Anyway, thanks. Sometimes I’m really good at missing the obvious.
Edit: I think I might just pull it off and put it onto a different driver. I was recently hoping for a way to get an OTC or two to add to existing lights. Or maybe just put it on the other side, on a star. I think there’s just barely enough room to fit with a button-top battery. (the driver I wanted to put it on doesn’t appear to have room unless I air-wire it)
Good job! It shouldn’t be very difficult to remove the OTC. Take a look at my videos thread. I normally add solder to both sides and the cap is off before I know it. Be ready to remove it from the tip of your iron with a pair of stainless or bamboo tweezers.
I’m new here so forgive my ignorance but am I able to buy one of these (17mm) competed? My soldering skills aren’t the best and surface mount is something I have never done. Lets just say I’d prefer to just buy one completed. I was going to buy a BLF17DD from Mountain Elec. but they’re out of stock and I think this single sided driver is pretty cool.
And it was a pain to get it on there too! I wanted to keep it single sided so that was the only option I had at the time. As others have mentioned, add a little fresh solder to it and your iron should be able to pull it right off.
Hah, when I ordered I didn’t realize that the star used for “no memory” was on the same pin used for OTC. I’ve been meaning to reflash it with no memory for months.
I figure I’ll add some other features too, while I’m at it.
(short/med/long presses, battery check mode, blinkies, etc)
Of course, I could also try to rig up some other sort of clip or connector, to flash in tighter spaces or when the two unused pins are blocked. The current OTC location is physically the best spot, it just blocks the SOIC clip.
Chazzy i might have a 2008D hot air station in about a week for a nice price if interested ? if so ill pm u when i get it might ask $60 shipped retail says $80
Hehe, that always seem to be my go to sarcastic response. I don’t think I’ve ever been successful conveying sarcasm through text.
The main turn off for me right now is the grounding problem with the cheaper reflow stations. If I knew which wire goes where I would be fine purchasing one.
So errr, don’t order SiS414DN to use on this driver. I must have missed the fact that it’s actually PowerPAK 1212-8, a much smaller package than LFPAK56. That’s why the “package limited” values seemed so low!
Now I’m stuck w/ two of them (which I ordered for testing with the QX7136 over here)… maybe that’s an excuse to make a smaller driver of some type?
It’s slightly larger than SOT23 (and significantly higher performance IIRC). It appears that PowerPAK 1212-8 is also known as: LFPAK33, DFN3.3x3.3, PQFN08B, EDFN 3x3, TSDSON-8, Micro8 Leadless, and MLP08S according to this document from NXP.
There are even smaller modern power-MOSFET packages which might be good choices for the task you mentioned. It appears that there is a SOT-363 compatible footprint being used now which is referred to as things like “PowerPAK SC-70-6” and “UDFN2020-6” and probably other things. It’s more like 2x2 rather than 3.3x3.3. Maybe something in that size could be found the for the smallest DD drivers. That said, if the larger 3.3x3.3 pacakage fits it’s what I’d probably go with.
Thanks for the answer wight, i realized that it was larger myself after my post so i deleted it, i am glad you saw it before i did
Of course if it would even be possible to make an even tighter 10mm FET driver i would be very interested, i have a bunch of small 10440 possible hosts coming that i just have to somehow put a XP-L V6 and a tiny driver in, but i think the slimmer the driver could get the less modification i will probably have to do to make it work and leave more room for heatsinking.
What do you think of the SI5415AEDU-T1-GE3, would something like that work?
it is a 1,9mm x 3 mm PowerPAK-8 ChipFET Single
If you would use the 3,3 x 3,3 what about A10DD-M8 as in “Micro8 solderless” and something that sounds similar to M80 and a FET DD driver in tiny aaa size packs a lot of BANG in a size of 2 M80’s J)
When I first built the Tiny10 FET the intention was for an Efest IMR10440 to run it at around 3A. But I was urged to test it with larger cells. As I recall it went up to almost 6A with bigger 18650 cells before I quit, wanting to use it in my favorite light and not kill it.
I have a new one in that light now that is pushing an XP-L V6 2C at 966 lumens from the Efest IMR10440 at 3.2A current draw. My cells are old, not fully charging anymore, so I have a couple of new ones on the way. Looking to get 1000 lumens from this 3” neck light. (the 2502 FET is the one it uses, I think)
Besides the BLFTiny10-12DD i am also considering trying a QTC direct drive in a twisty to get some control and usable lower output, they should manage up to 10A.
I wonder i anyone have tried one in a 18650 twisty………
How well do you know your drivers? Can you populate it like this, without looking at any cheat sheets? I must’ve done too many or something, because I CAN! lol
I forget so much, so fast, it’s simply astonishing that I can look at this layout and know what goes where without even thinking about it.
Just goes to show, priorities are always a key factor! lol LOVE this driver! It has greatly eased my process and the fit into a light is so simplified it’s almost like cheating.
I wanted to keep it single sided so that was the only option I had at the time. As others have mentioned, add a little fresh solder to it and your iron should be able to pull it right off. 
