Guys... in researching stuff for an unrelated driver I killed, I found it used a bunch of little SOT-23 FETs, the AO3400 (top marking is 'AO7T'). Digikey page: http://www.digikey.com/product-detail/en/AO3400A/785-1000-1-ND/1855942
Check out the datasheet. Compare it to the one we've been using on the 15DD: http://www.digikey.com/product-detail/en/IRLML2502TRPBF/IRLML2502PBFCT-ND/812502
Higher voltage & current ratings, lower on-resistance, and an easier-to-drive gate?
There are a lot of small FETs which are better but the 2502 was so cheap available from china so that it got a kind of rush.
If you order from a bigger distributor anyway than there is a newer version of the 2502 and IRLML6344TRPbF.
They “all” seem to have the same footprint, so a major investigation should find even some better ones.
Who is going to be the guinea pig tester for this? Sounds all good... I'm using a BLF15DD now, and planning on more in those cheap little AA zoomies and it works well, not crazy amps because I don't want crazy amps in that little thing... I'm using a Sanyo 840 and get decent amps but still in the 2.n range. Just ordered the Efest IMR 700's from RMM, so expecting to get more amps. The 15 mm boards are great for little lights, but 5-7 amps is a little insane .
I wouldn't mind trying it I suppose. I can add qty 2 to the next DigiKey order at work here, hhmmm.....
I thought I read that the OP has been updated for the latest DD versions. I get 404 errors when I try to use the links. Can someone link me to them or to the account holder's share page that is sharing them?
I've removed the Medusa PCB for the time being. There is a repairable error in the ground plain. It can be fixed but I'll correct it properly this weekend and upload a fixed version later on.
sorry…they are under my profile…Rufus is going to fix the links…I did a revision tweak like on the BLF17/20/22 and moved the C1 capacitor (for the mode change stability) and removed the load resistor
Can anyone give me the voltage divider resistor’s the CAP and diode values for the MELV2? I’m building my next board now based of everett’s PIC MCU but dont know what the values need to be.