LS7290， LS7290-S， LS7290-TS
Stepper Motor Controller (24 Pins)
Controls Bipolar and Unipolar Stepper Motors
Full， 1/2 step modes selection
Direct interface to L298 for BiPolar motors
Enable， Step， Direction and Reset control inputs
PWM chopper circuit for step and torque control
Two peak current sense comparators with external reference input
Programmable interstep blanking delay
3 to 5。5 volt operation
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QQ 1