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DMOS Microstepping Driver with Integrated Translator and Selectable Step Modes
A4984
The A4984 simplifies microstepping motor control with its integrated translator and selectable step modes, offering automatic current decay selection and synchronous rectification for optimized performance.
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Synchronous rectification for low power dissipation
Internal UVLO
Crossover-current protection
3.3 and 5 V compatible logic supply
Thin profile QFN and TSSOP packages
Thermal shutdown circuitry
Short-to-ground protection
Shorted load protection
Low current Sleep mode, <10 µA
No smoke no fire (NSNF) compliance (ET package)
The A4984 is supplied in three surface mount packages: two QFN packages, the 4 mm × 4 mm, 0.75 mm nominal overall height ES package, and the 5 mm × 5 mm × 0.90 mm ET package. The LP package is a 24-pin TSSOP. All three packages have exposed pads for enhanced thermal dissipation, and are lead (Pb) free (suffix –T), with 100% matte tin plated leadframes.