Part Number:DRV8837C
Hi,
1. I would like to know how much of regulation is needed for power inputs Vcc & VM.
I am powering these directly through two Schotty diodes in series from a 3xAAA battery. It also has a 20 mA load other than DRV8837C. So the instantaneous voltage will depend on current drawn (ie mainly when motor is running). The instantaneous voltage will be within the recommended range (for Vcc & VM) but would vary when motor ON vs OFF state. Can i know if this is acceptable for VM & VCC?
From my simulation the Vcc would be between 2.7 and 2.86V . VM would be between 3.9 to 3.96V. I am ok with Vih/Vil depdencency on Vcc
2. Can you also recommend me of a the bulk capacitance in VM power input given my motor peak stall current will be about 250mA
3. Since my system is powered from a battery, there will be transient voltage spikes when inserting the battrery or removing. Can the device withstand Transients? if no can you recommend a TVS diode circuit for use with DRV8837C
Rgds
Vasudha