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Automotive Programmable Stepper Driver with SPI Control and Diagnostics
A3981
The A3981 provides highly configurable and reliable stepper motor control for automotive applications. Features SPI control, programmable current regulation, and diagnostic capabilities for enhanced system performance.
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Low RDS(on) outputs, 0.5 Ω source and sink, typical
Automatic current decay mode detection/selection
Mixed, Fast, and Slow current decay modes
Synchronous rectification for low power dissipation
Internal OVLO, UVLO, and Thermal Shutdown circuitry
Crossover-current protection
Short circuit and open load diagnostics
Hot and cold thermal warning
Stall detect features
SPI-compatible or simple Step and Direction motion control
Highly configurable via SPI-compatible serial interface
The A3981 is supplied in a 28-pin TSSOP power package with an exposed thermal pad (package type LP). This package is lead (Pb) free with 100% matte tin leadframe plating.