Description: The A3977 is a complete microstepping motor driver, with builtin
translator. It is designed to operate bipolar stepper motors in
full-, half-, quarter-, and eighth-step modes, with output drive
capability of 35 V and ±2.5 A. The A3977 includes a fixed
off-time current regulator that has the ability to operate in
slow-, fast-, or mixed-decay modes
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3977.pdf
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