As you can see in the circuit diagram, this electronic project require few external electronic parts. The maximum output current that can be provided by this PWM current-control stepping motor driver IC is up to 1. 5 ampere. The setting conditions for the above PWM current-control DC motor driver circuit diagram are as follows : Auto recovery-ty
pe output short-circuit protection function (EMM = Low), Output enable function fixed to output ON state (OE = High), Current limit reference voltage setting = 100% (ATT1 = Low, ATT2 = Low), Chopping frequency : 37kHz (RCHOP = 43k ).