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The more steps the better. Ideally a 256 step would do. Finer voltage output tuning w/ more steps. You don't have to press the PB a hundred times. Just hold it depress to cycle through.The pins and nomenclature are the same for the image DP in the attached......Note: these DP's do not have a debounce circuit. It is added in the circuit below.....
To use a part in an SOIC or MSOP package, you would need to use a breakout board like this. It is possible to solder components by hand with packages that small if you have the right tools and supplies. You would use a fine tip, fine wire solder, and some good magnification. There's some soldering tutorials that have been posted here that show how to do it. You can also do it easily using reflow soldering.That's a less common debouncer configuration in the diagram, but that would work too. Attached is a debouncer I would typically use with a 3V supply, for a 5V supply I'd use 47K resistors, but it's not critical, just determines current loading, I like to keep it around 100uA.
Break is popularity with this boost modSeems they have your original config for this chip..It is a sweet mod..What is the voltage range with the 100k 10kset 100ktrim? http://blog.naver.com/PostView.nhn?blogId=kingkong4235&logNo=80137147070&redirect=Dlog&widgetTypeCall=true
Me either . I have quite a few pics of the build.I made a vamo v3 board based mod before. It lasts me 2 1/2 to 3 days on a charge with 3 x 1000 mAh LiPos.
I've just been looking on farnell for this chip, there appears to be quite a few variants: PTN04050CAD, PTN04050CAZ, PTN04050AAD, PTN04050AAZ...Which would be the best for our application?Thanks
Basically if I could fit 2x14500, sort of above the circuitry would this be safe and possible?
It's a booster so you're talking parallel removable cells which carries some safety concerns for unprotected batteries. You'd need to run a fuse on each cell to provide protection for reverse polarity or excessive equalization currents that can occur if installed with a charge mismatch. Protected cells can resolve the isssue, but protected cells that small may trip when running higher outputs. Other than that, there's no issue using parallel 14500s.
Hello guys, I have just read this topic from start to finish, my brain is fried lol.I have a project in mind.... Was looking for advice and suggestions, I have a bottom feeder box mod, which runs off an 18500 battery, just a tactile switch no vv... As yet.Basically if I could fit 2x14500, sort of above the circuitry would this be safe and possible?If you want any pics of the inside and measurements I would be happy to provide them. But as this would be my very first attempt at this kind of build any advice would be appreciated. BTW I have no problem with ripping out the internals of this mod.Thanks in advance RussellPS I posted in this thread as this is the chip set that I would be interested in using.
Russ!If it's your bogger you're thinking of converting, then why not make it single 18350 and fit the booster above or below the battery? There should be just about enought room...
Interesting... that said, I've been using a 1.1ohm coil on mine wiuthout a fuse at 4.2V, which is about 16watts.I might go for 2 x 3A in parallel, as I have loads of them here. Unless anyone can see any issues?that should allow me to run a 1.1ohm coil at 4.2V pretty comfortably.
good evening guys! If I got it right I should use a heat shrink to pump the circuit above the 12w declared by TI?thank you all