ZHCS276F September 2011 – February 2025 DRV8818
PRODUCTION DATA
The DRV8818 is a highly configurable, integrated motor driver for bipolar stepper motors. The device integrates two H-bridges, current sense and regulation circuitry, and a microstepping indexer. The DRV8818 can be powered with a supply voltage between 8V and 35V and is capable of providing an output current up to 2.5A full-scale.
A simple STEP/DIR interface allows for easy interfacing to the controller. The internal indexer is able to execute high-accuracy microstepping without requiring the controller to manage the current regulation loop.
The current regulation is highly configurable, with three decay modes of operation that can be selected depending on the application requirements: Fast Decay, Slow Decay, and Mixed Decay. The DRV8818 also provides configurable mixed decay, blanking time, and off time to adjust to a wide range of motors.
A low-power sleep mode is incorporated which allows for minimal power consumption when the system is idle.