I am making a stepper motor driver. The motor requires 4V but the STM32F103 chip I am using requires 3.3V. I am using a DC-DC buck converter to convert the 12V input. Can I supply the motor with a 3.3V voltage for simplicity or do I need two separate buck converters: a 4V for the motor and a 3.3V for the STM32?
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