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DMOS Dual Full-Bridge PWM Motor Driver with Parallel Inputs and Overcurrent Protection
A4987
The A4987 efficiently drives two stepper motors with its dual full-bridge design, parallel input communication, and integrated overcurrent protection.
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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
The A4987 is supplied in two packages, a 24-contact QFN (ES) and a 24-pin TSSOP (LP). Both packages have exposed thermal pads for enhanced thermal performance. The 24-contact ES is 4 mm × 4 mm, with a nominal overall package height of 0.75 mm. The 24-pin LP is a TSSOP with 0.65 pitch and an overall package height of ≤1.2 mm. Both packages are lead (Pb) free, with 100% matte tin leadframe plating.