A2919SB

Overview

The A2919SB is a dual full-bridge PWM motor driver designed to drive bipolar stepper motors or control two DC motors bidirectionally. It features internal pulse width modulation for output current control up to 750 mA and sustains output voltages up to 45 V. The device includes internal clamp diodes, thermal shutdown circuitry, and low output saturation voltage characteristics. It supports half-step or quarter-step operation for bipolar stepper motors.

Feature Summary

• Dual full-bridge architecture for driving bipolar stepper motors or two DC motors
• Internal PWM current control with continuous output capability
• Integrated protection including internal clamp diodes and thermal shutdown

Applications

• Bipolar stepper motor control systems
• Bidirectional DC motor drives
• General purpose motor driver applications

Procurement Notes

Verify the specific suffix 'SB' against the manufacturer datasheet to confirm pinout and electrical specifications match your design requirements. Ensure compatibility with the required supply voltage range and load conditions before procurement.

Selection Notes

Select this component when a dual H-bridge solution is needed for bipolar stepper or DC motor applications requiring integrated PWM current regulation and robust protection features within a single package.

Part Context

The A2919 series consists of dual full-bridge drivers from Allegro MicroSystems. The SB variant is part of this family, offering integrated power stages and control logic for motor applications. It is distinct from other Allegro motor drivers by its specific bridge configuration and current handling capabilities.

Replacement Considerations

Check for direct substitutes like A2919SLB or A2919SB-T if available. Verify pin compatibility and electrical ratings before substituting.