▪ ±2.5 A, 35 V output rating ▪ Low rDS(on) outputs, 0.45 Ω source, 0.36 Ω sink typical ▪ Automatic current decay mode detection/selection ▪ 3.0 to 5.5 V logic supply volt.

where a complex microprocessor is unavailable or over-burdened. Internal synchronous-rectification control circuitry is .

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 fixe.

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