Teensy 4.1 part changes

PaulStoffregen

Well-known member
Teensy 4.1 is getting a couple minor changes due to supply chain problems with the voltage regulator and schottky diodes.

teensy41_changes_march2022.jpg

TLV75733P (U4) replaced by NCV8186AMN330TAG, and BAT54C (D1,D2) replaced by BAS40-05V.
 
Does not sound like a lot of fun!

Hope the supply problems gets better soon!

Every time I open up a BOM, I'm like "Damn! More things are OOS and unreliable suppliers are holding large or remaining stocks so many things and selling at huge profits like 1,000%!"

Here is me placing 3 footprints of voltage regulators to one board:

205a5c39c9326fa0524f9b11f2d1bcfd04e05fa9.png
 
Is there anything special to be aware of when swapping to the NCV8186AMN330TAG? Best I can tell you just need to connect FB pin to the OUT pins, then it's just a drop in to the Teensy 4.1 diagram. I think the adjacent resistors and capacitors can just stay the same as before? I have some boards in the making and just want to make sure I'm not missing anything.
 
Yes, NCV8186AMN330TAG is an easy replacement if you just connect the output to pins 1,2,4 and the input to pin 7,8. Of course GND and EN need to be connected.
 
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