The A3906 integrated circuit from Allegro Microsystems (www.allegromicro.com) consists of a PWM controller that can be used with both direct current motors and a stepper motor. The integrated circuit can operate with voltages from 2.5 to 9 V and a maximum output current of 1 A. The device used also has a sleep and shutdown function. In the figure we have the diagram for the application of control of two DC motors. In the same figure we have the same integrated circuit used in a bipolar stepper motor control.
