DRV8846RGER

Overview

The DRV8846RGER is a bipolar stepper motor driver manufactured by Texas Instruments, designed for applications requiring precise motion control. It features two integrated H-bridge drivers capable of delivering up to 1.4A continuous output current per bridge at 25°C. The device operates within a supply voltage range of 4V to 18V and supports step resolution from full step to 1/32 microstep. It utilizes a Step/Direction interface and includes configurable decay modes. The component is housed in a 24-VQFN package with dimensions of 4.00 x 4.00 mm and a height of 1.00 mm, rated for operation between -40°C and +150°C junction temperature.

Feature Summary

• Integrates dual H-bridge drivers with an internal microstepping indexer for smooth bipolar stepper motor control.
• Supports programmable PWM current chopping with selectable off-times and multiple decay modes including smart tune.
• Provides comprehensive protection mechanisms such as overcurrent protection, thermal shutdown, and undervoltage lockout.
• Features a low-power sleep mode accessible via the nSLEEP pin to minimize static current consumption.

Applications

• Printers and scanners
• Security cameras and surveillance equipment
• Projectors and display devices

Procurement Notes

Verify the specific suffix RGER against the official datasheet to confirm the reel packaging configuration and moisture sensitivity level. Ensure compatibility with the target PCB footprint for the 24-VQFN package. Confirm that the operating voltage range aligns with the system power supply requirements before integration.

Selection Notes

Select this component when driving bipolar stepper motors with currents up to 1.4A per phase. It is suitable for designs requiring high integration of control logic and power stages. Consider the thermal performance of the VQFN package if operating near maximum current limits without adequate heatsinking.

Part Context

This part belongs to the DRV8846 family of dual H-bridge motor drivers from Texas Instruments. It is specifically optimized for compact motion control solutions where space efficiency and integrated microstepping capabilities are critical. The device simplifies design by combining power MOSFETs with digital control logic.

Replacement Considerations

DRV8846RGET