Will be using 4 Brushed DC motors
Voltage operating range: 6 - 12 vdc
max current 269mA
It's a simple project, will DRV 8833 work, will I need 2 or only 1. Thanks for any help.
The maximum operating on the DRV8833 is 10.8V, so 12V is going to be a problem. If you can use a lower voltage, than 2 of the DRV8833 will work. Do you need 6V on the lower range?
We have a selection tool that can help you choose another device. Unfortunately, 6V-12V operation is not available on the current portfolio so one of the voltage limits will have to move in order to find a part that will work. Please see the link below that will take you directly to the BRUSHED selection guide:
Motor Drive Application Manager
The DRV8833 is designed to drive two DC motors. If you want to drive 4 motors, it may still be feasible as long as you sacrifice direction control. For example, you can connect the four motors' first lead to each one of the outputs and the second lead to GND. Then, when the respective output is HI, the motor moves in one direction and when the output is LO, then the motor stops. There is no way to control direction with this scheme.
If you want to preserve direction control, then you will need two DRV8833 devices.
Do note this device is rated to an input voltage no larger than 10.8V. So if you apply 12V, you will be outside of Abs Max ratings in which case there is no guarantee as to what will happen. Most likely the device will be adversely affected and will eventually be permanently damaged.
Hope the info helps. Best regards,
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