DRV8818

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community Reference Design DRV8818 SLVSAX9E – SEPTEMBER 2011 – REVISED JANUARY 2016 DRV8818 Stepper Motor Controller IC 1 Features 1 Pulse Width Modulation (PWM) Microstepping Motor Driver – Built-In Microstepping Indexer – Up to 8 Microsteps/Step – Step and Direction Control – Programmable Mixed Decay, Blanking, and Off Time Up to 2.5-A Current Per Winding Low 0.37-Ω (HS + LS) MOSFET RDS(ON) (25°C) 8-V to 35-V Operating Supply Voltage Range Pin to Pin Upgrade for DRV8811 With Lower RDS(ON) Thermally-Enhanced Surface Mount Package Protection Features – VM Undervoltage Lockout (UVLO) – Overcurrent Protection (OCP) – Thermal Shutdown (TSD) 2 Applications Printers Textile Machinery Positioning/Tracking Factory Automation Robotics 3 Description The DRV8818 provides an integrated stepper motor driver solution for printers, scanners, and other automated equipment applications. The device has two H-bridge drivers, as well as microstepping indexer logic to control a stepper motor. The output driver block for each consists of Nchannel power MOSFETs configured as full Hbridges to drive the motor windings. A simple STEP/DIRECTION interface allows easy interfacing to controller circuits. The mode pins allow for configuration of the motor in full-step, half-step, quarter-step, or eighth-step modes. Decay mode and PWM off time are programmable. Internal shutdown functions are provided ...