DRV8824RHDT

Overview

The DRV8824RHDT is a bipolar stepper motor driver from Texas Instruments, housed in a 28-pin VQFN package. It integrates two H-bridge drivers and an on-chip microstepping indexer capable of resolutions from full-step to 1/32-step. The device supports a supply voltage range of 8.2V to 45V and delivers up to 1.6A output current per phase with adequate thermal management. It operates within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates a microstepping indexer for step/direction control without external logic
• Configurable microstepping resolution ranging from full-step to 1/32-step
• Programmable decay mode for optimized motor performance
• Includes internal protection against overcurrent, short circuits, undervoltage, and overtemperature

Applications

• Printers
• Scanners
• Automated equipment

Procurement Notes

Verify the specific suffix RHDT corresponds to the 28-VQFN package and tape-and-reel configuration. Confirm the operating temperature grade matches the required application environment. Ensure proper heatsinking is planned for high-current operation to maintain reliability within specifications.

Selection Notes

Select this component when a compact solution for bipolar stepper motors is required. It is suitable for applications needing integrated microstepping control to reduce mechanical resonance. Consider thermal design constraints if continuous high current is necessary.

Part Context

This part belongs to the DRV8824 family of stepper motor drivers. It shares functional similarities with other members like DRV8824PWP but differs in packaging and reel configuration. The VQFN form factor allows for smaller board footprints compared to HTSSOP variants.

Replacement Considerations

DRV8824PWPR offers identical electrical characteristics in an HTSSOP-28 package. DRV8824PWP provides the same functionality in a tube-packaged HTSSOP-28. Verify pin compatibility and thermal requirements when substituting.