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Full-Bridge PWM Microstepping Motor Driver with Selectable Decay Modes
A4975
The A4975 offers precise microstepping control of bipolar stepper motors, with selectable decay modes (slow, fast, mixed), an integrated DAC for current control, and internal protection features.
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Fast, mixed fast/slow, and slow current-decay modes
Internal thermal shutdown circuitry
Crossover-current and UVLO protection
The A4975 is supplied in a choice of two power packages; a 16-pin dual-in-line plastic package with copper heat-sink tabs (suffix ‘B’), and a 16-lead plastic SOIC with internally fused pins (suffix ‘LB’). For both package styles, the thermally enhanced pins are at ground potential and need no electrical isolation. Both packages are lead (Pb) free, with leadframe plating 100% matte tin.