1 Features
• 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 2.5A Current Per Winding
• Low 0.37Ω (HS + LS) MOSFET RDS(ON) (25°C)
• 8V to 35V 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 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 N-channel
power MOSFETs configured as full H-bridges 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 for over
current protection, short circuit protection, undervoltage
lockout and overtemperature.
The DRV8818 is packaged in a 28-pin HTSSOP
package with PowerPAD™.