DRV8840PWPR

Overview

The DRV8840PWPR is a half-bridge brushed DC motor driver manufactured by Texas Instruments. It operates within an 8.2V to 45V supply voltage range and delivers up to 5A peak current or 3.5A continuous output current. The device is housed in a 28-pin PowerPAD HTSSOP package with a junction temperature rating of -40°C to +150°C. Key electrical parameters include a maximum operating temperature of +85°C for the standard variant and a typical quiescent current of 5mA.

Feature Summary

• Integrates surge protection capabilities to safeguard against voltage transients during operation.
• Features programmable decay modes that allow users to select between braking or coasting states when the driver is disabled.
• Includes comprehensive protection mechanisms such as overcurrent protection, short-circuit protection, undervoltage lockout, and thermal shutdown.

Applications

• Printers
• Scanners
• Gaming consoles
• Office automation equipment
• Factory automation systems

Procurement Notes

Verify the specific suffix (PWP vs PWPR) to confirm packaging type, as PWP denotes tube packaging while PWPR indicates reel packaging. Confirm RoHS compliance status and moisture sensitivity level (MSL 3) requirements for your assembly process. Check current availability status, as some variants may have restricted supply or obsolescence notices. Ensure the selected part matches the required output current specifications for your application design.

Selection Notes

Select this component for applications requiring robust protection features and high peak current handling in a compact form factor. Consider the DRV8874 if bill-of-materials reduction is a priority, as it eliminates the need for external sense resistors. Evaluate thermal management needs given the PowerPAD package design. Verify compatibility with system voltage ranges and interface requirements before finalizing the design choice.

Part Context

The DRV8840 belongs to Texas Instruments' family of motor drivers designed for general-purpose motion control. It serves as a reliable solution for driving brushed DC motors in consumer and industrial electronics. The device integrates both control logic and power stages into a single chip, simplifying circuit design compared to discrete solutions.

Replacement Considerations

The DRV8874PWPR is documented as a substitute option that offers BOM space savings by removing the need for sense resistors. Verify functional equivalence regarding current ratings and protection features before replacement.

FAQ

What are the available decay modes for the DRV8840?

The DRV8840 supports programmable decay modes, allowing the user to configure the motor behavior for either braking or coasting when the driver is disabled.

Does the DRV8840 include surge protection?

Yes, the DRV8840 integrates surge protection functionality to handle voltage spikes common in motor drive applications.