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* ±2.5 A, 35 V Output Rating Low rDS(on) Outputs, 0.45 Ω Source, 0.36 Ω Sink Typical Automatic Current Decay Mode Dete.

where a complex µP is unavailable or over-burdened. Internal synchronous-rectification control circuitry is provided to .

Device Operation. The A3977 is a complete microstepping motor driver with built in translator for easy operation with minimal control lines. It is designed to operate bipolar stepper motors in full-, half-, quarterand eighth-step modes. The current i.

3970

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3976

39-01-2145

39-28-1xxx

39-28-8xxx

39-29-0xxx

39-29-3xxx

39-29-6xxx

39-31-0040