Hi, support team
My customer has the questions as follow:
I'm using the DRV8825 in a design where I am interfacing to an external microcontroller with a 5 VDC supply.
I/O levels from this microcontroller are similarly 5 V.
The DRV datasheet seems to indicate I can drive the logic-level inputs on the device with 5V logic levels without issue.
I would like to know if a separate 3.3 VDC regulated supply is recommended for the DRV in addition to the V3P3OUT provided, as the datasheet seems to indicate this output can only provide 1 mA.
I would like to use the nFAULT output to directly drive an LED (~5 mA) and I'm not sure if I'm better off just not using the DRV's internal V3P3OUT at all, and providing my own 3.3 VDC source?
Thanks so much.