I had some voltage regulators made which use the first circuit in this datasheet: http://www.ti.com/lit/ds/symlink/lm27313.pdf
And I'd like to drive a vibration motor like this off it: https://catalog.precisionmicrodrives.com/order-parts/product/324-401-24mm-vibration-motor-13mm-type
I had a mosfet module with a flyback diode on it to use with 5V motors, but I had 100 of my 12V modules made and I only really needed 50 and I was thinking maybe I could upgrade the vibration motor in my project to a 12V one of the same size and use those spare 12V modules instead of spending hundreds of dollars getting more of the mosfet modules made.
The 12V modules don't have that flyback diode in them though. They do however have a diode that would protect the switch pin and inductor, and there's a path to ground through R1 and R2. So I thought maybe it might be okay. Plus it's not a very large motor.
I'd solder a diode across the pins on the motor, but there aren't any, just a couple wire leads, so it would be a bit of a pain and there's no really good place to put a diode on the module itself and I cant' trust the end user won't get the altered and unaltered modules mixed up.
So what do you think? Will I fry the regulator quickly? Will it survive? And is there any chance at all of damaging my microcontroller?