Other Parts Discussed in Thread: DRV8846, DRV8847
Hello,
I am wondering if this driver would be suitable for very low current stepper motors (~20mA per coil). Specifically, the application I am looking at requires a large number of small instrumentation stepper motors (something like the X27 junken or equivalent) and the ability to daisy chain these devices over SPI is very attractive.
I noticed in the datasheet that the open load fault can be disabled (which I am assuming would be necessary, as the open load detection threshold appears to be 30mA). If this was disabled, and VREF set to ~0.1V, could I expect the DRV8899 to drive the stepper reasonably well or should I disregard this part for my application?
Thanks,
Jonathan