Part Number:DRV2605L
I have an ERM that when connected directly to the DRV2605L I get no output. The armature resistance of the ERM is 26.7 Ohm, which is well above the minimum 4 Ohm impedance specified in the datasheet. If I add a 2.2 Ohm or greater resistor in series with the ERM it works as expected. With resistor values smaller than 2.2 I get no output. I've checked the OC_DETECT bit in the status register and it is not set, but it seems clear that the DRV2605L is disabling the output based on the resistance it sees.
Is it possible for the device to disable output without setting the OC_DETECT bit? Is there anyway to disable the overcurrent protection?