DRV8846

Product Folder Order Now Technical Documents Tools & Software Support & Community DRV8846 SLLSEK2A – JUNE 2014 – REVISED MARCH 2017 DRV8846 Dual H-Bridge Stepper Motor Driver 1 Features 1 PWM Microstepping Motor Driver – Built-In Microstepping Indexer – Up to 1/32 Microstepping – Step/Direction Control Multiple Decay Modes – Smart tune Technology – Mixed Decay – Slow Decay – Fast Decay Configurable Off-Time PWM Chopping – 10-, 20-, or 30-μs Off-Time Adaptive Blanking Time for Smooth Stepping 4- to 18-V Operating Supply Voltage Range 1.4-A (Full Scale (Max Drive) Current per H- Bridge (at 25°C) Low-Current Sleep Mode 3-Bit Torque DAC to Scale Motor Current Thermally Enhanced Surface Mount Package Protection Features – VM Undervoltage Lockout (UVLO) – Overcurrent Protection (OCP) – Thermal Shutdown (TSD) – Fault Condition Indication Pin (nFAULT) 2 Applications Printers Scanners Video Security Cameras Projectors 3 Description The DRV8846 provides a highly-integrated stepper motor driver for cameras, printers, projectors, and other automated equipment applications. The device has two H-bridges and a microstepping indexer and is intended to drive a bipolar stepper motor. The output block of each H-bridge driver consists of Nchannel and P-channel power MOSFETs configured as full H-bridges to drive the motor windings. The DRV8846 is capable of driving up to 1.4-A full-scale output current (with proper heatsinking and TA = 25°C). A simple STEP/DIR in...