A3966SA – ALLEGRO
Bipolar Motor Driver Bipolar Parallel 16-DIP _x000D_
IC MTR DRV BIPLR 4.75-5.5V
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The A3966SA, manufactured by Allegro MicroSystems, is a monolithic bipolar integrated circuit designed for driving bipolar stepper motors in a parallel (full-step) mode. Fabricated using a mixed-signal BiCMOS process, it integrates control logic and high-current output drivers to efficiently control two-phase stepper motors. The device operates from a supply voltage range of 4.75V to 5.5V, making it suitable for various low-voltage applications. Housed in a 16-pin dual inline package (DIP), the A3966SA provides a straightforward interface for microcontroller-based motor control systems. The internal circuitry includes overcurrent protection and thermal shutdown features to enhance reliability and prevent damage under fault conditions. The output drivers are capable of sourcing and sinking significant current, enabling the direct driving of moderate-sized stepper motors without the need for external power transistors.
