Digi-Key – 2.5A bipolar stepper motor driver with on-chip 1/8 microstepping indexer (Texas Instruments - DRV8818)Jul 16 2012 - Semiconductors [More Semiconductors Articles]
Now available from Digi-Key, Texas Instruments’ DRV8818 provides an integrated stepper motor driver solution for printers, scanners, and other automated equipment applications.
The device has two H-bridge drivers and a 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. Pins allow 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 over-temperature.More news from Digikey