The above board was designed with the ONSemi NCP3066.
Upsides:
- 1.5A switch current
- Cheap
Downsides:
- Its inefficient, due to a bi-polar output element (not a FET)
- Thermal sinking is bad (compounded problem from the above)
I had actually considered the LM3414 as the second runner - I'll end up with a test board of each most likely.
Currently, my main MCU is slated to be the
K24 (_120 family). At the price points, there is little reason to stick to an 8-bitter if you also want an RTC, USB, and just lots of resources to be totally wasteful with. I'm planning on adding a home for a stack-on-board Bluetooth LE/Smart module (such as the
RN4020), even if I don't end up with firmware for it at first.