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DMOS Dual Full-Bridge Microstepping PWM Motor Driver with Synchronous Rectification
A3992
The A3992 provides precise and efficient microstepping control of bipolar stepper motors, with programmable current control, synchronous rectification for reduced power dissipation, and integrated protection features.
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Programmable mixed, fast, and slow current decay modes
4 MHz internal oscillator for digital timing
Serial interface controls chip functions
Synchronous rectification for low power dissipation
Internal UVLO and thermal shutdown circuitry
Crossover-current protection
Inputs compatible with 5 or 3.3 V control signals
Sleep and Idle modes
The A3992 is supplied in a thin profile (1.2 mm maximum height) 24 pin TSSOP (suffix LP) with exposed thermal pad. The exposed thermal pad on the LP is at ground potential and needs no electrical isolation. The package islead (Pb) free with 100% matte tin leadframe plating.