Stepper Motor Controller 28-Pin HTSSOP EP T/R

The DRV8811 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 consists of N-channel power MOSFETs configured as full H-bridges to drive the motor windings. A simple STEP/DIR interface allows easy interfacing to controller circuits. Step 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, under-voltage lockout and overtemperature. The DRV8811 is packaged in a PowerPAD 28-pin HTSSOP package with thermal pad (Eco-friendly: RoHS and no Sb/Br).

Pulse Width Modulation (PWM) Microstepping Motor Driver

• Built-In Microstepping Indexer
• Up to 1/8 Microstepping
• Step and Direction Control
• Programmable Mixed Decay, Blanking, and Off-Time

Up to 1.9-A Current Per Winding

Low 1.0-? (HS+LS) MOSFET R_DS(ON) (25°C)

8-V to 38-V Operating Supply Voltage Range

Pin to Pin with the DRV8818

Thermally Enhanced Surface Mount Package

Protection Features:

• VM Undervoltage Lockout (UVLO)
• Overcurrent Protection (OCP)
• Thermal Shutdown (TSD)
• Fault Condition Indication Pin (nFAULT)