AMT49700KETJTR

Overview

The AMT49700KETJTR is an automotive-grade bipolar stepper motor driver IC manufactured by Allegro MicroSystems. It integrates control logic, commutation algorithms, and power MOSFETs into a single package. The device supports multiple step resolutions including full, half, quarter, eighth, and sixteenth steps. It operates with a supply voltage range of 0V to 42V and delivers an output current of 1.6A per phase. The component utilizes a serial interface for communication and is housed in a 32-QFN (5x5mm) package with wettable flanks for enhanced solderability. It functions within a junction temperature range of -40°C to 150°C.

Feature Summary

• Integrates advanced commutation and direction management control logic with high-current power stages.
• Supports five selectable microstep resolutions for precise motion control applications.
• Features a serial interface for simplified system integration and configuration.
• Designed with wettable flank technology on the QFN package to ensure reliable surface mount assembly.

Applications

• Automotive seat adjustment mechanisms
• HVAC actuator systems in vehicles
• Steering column position sensors
• Fuel pump control modules

Procurement Notes

Verify the specific suffix KETJTR to confirm the 32-QFN package type and reel quantity specifications. Ensure compatibility with automotive environmental standards required for your application. Confirm that the serial interface protocol matches your host controller capabilities before procurement. Check for any recent product change notices regarding packaging or material composition updates from the manufacturer.

Selection Notes

Select this component when designing systems requiring integrated stepper motor control with high thermal performance. The 1.6A output current rating suits moderate load applications without external heat sinks in many configurations. The wide operating voltage range allows flexibility in power supply design. Consider the serial interface requirements versus parallel alternatives if pin count is constrained.

Part Context

This part belongs to the AMT49700 family of automotive stepper motor drivers. It is distinct from the APEK49700KET-01-T, which is a development tool rather than the functional IC itself. The AMT49700 series is engineered specifically for automotive environments, offering robust protection features and high reliability compared to general-purpose industrial counterparts.

Replacement Considerations

Direct replacements include other parts within the AMT49700 family such as the AMT49700KETJTR variant with different packaging options. Verify pin-to-pin compatibility and software register compatibility when substituting with similar Allegro stepper drivers. Cross-reference with the manufacturer's official substitution guide for qualified alternatives.