Product details

Number of full bridges 2 Vs (Min) (V) 4 Vs ABS (Max) (V) 20 Full-scale current (A) 1 Peak output current (A) 2 RDS(ON) (HS + LS) (mOhms) 900 Sleep current (uA) 1.2 Control mode STEP/DIR Control interface Hardware (GPIO) Micro-stepping levels 32 Features Current Regulation, Smart Tune Rating Catalog Operating temperature range (C) -40 to 85
Number of full bridges 2 Vs (Min) (V) 4 Vs ABS (Max) (V) 20 Full-scale current (A) 1 Peak output current (A) 2 RDS(ON) (HS + LS) (mOhms) 900 Sleep current (uA) 1.2 Control mode STEP/DIR Control interface Hardware (GPIO) Micro-stepping levels 32 Features Current Regulation, Smart Tune Rating Catalog Operating temperature range (C) -40 to 85
VQFN (RGE) 24 16 mm² 4 x 4
  • 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)
  • 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)

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 N-channel 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 interface allows easy interfacing to controller circuits. Pins allow configuration of the motor in full-step up to 1/32-step modes. Decay mode is configurable so that smart tune, slow decay, fast decay, and mixed decay can be used. The PWM current chopping off-time can also be selected. A low-power sleep mode is provided which shuts down internal circuitry to achieve very-low quiescent current draw. This sleep mode can be set using a dedicated nSLEEP pin.

Internal protection functions are provided for UVLO, overcurrent protection, short circuit protection, and overtemperature. Fault conditions are indicated via a nFAULT pin.

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 N-channel 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 interface allows easy interfacing to controller circuits. Pins allow configuration of the motor in full-step up to 1/32-step modes. Decay mode is configurable so that smart tune, slow decay, fast decay, and mixed decay can be used. The PWM current chopping off-time can also be selected. A low-power sleep mode is provided which shuts down internal circuitry to achieve very-low quiescent current draw. This sleep mode can be set using a dedicated nSLEEP pin.

Internal protection functions are provided for UVLO, overcurrent protection, short circuit protection, and overtemperature. Fault conditions are indicated via a nFAULT pin.

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Technical documentation

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Type Title Date
* Data sheet DRV8846 Dual H-Bridge Stepper Motor Driver datasheet (Rev. A) 27 Mar 2017
Application note Best Practices for Board Layout of Motor Drivers (Rev. B) 14 Oct 2021
Application note Methods to Configure Current Regulation for Brushed and Stepper Motors (Rev. B) 19 Jan 2021
Application note Smart Tune for Quiet and Smooth Stepper Motor Operation (Rev. A) 01 Nov 2020
White paper Stepper Motors Made Easy with Smart Tune (Rev. C) 01 Nov 2020
Technical article Drive unipolar stepper motors as bipolar stepper motors with a simple wiring reconfiguration 09 Apr 2020
Technical article How stepper motors improve noise and efficiency in automotive system design 19 Nov 2019
White paper How smart tune regulates current in stepper motors (Rev. A) 19 Mar 2019
Application note Smart Tuning for Efficient Stepper Driving 20 Nov 2018
Technical article Getting smart about tuning your stepper motor 23 Aug 2018
Application note Small Motors in Large Appliances 20 Jul 2018
Technical article The story of motor-drive integration 09 Jan 2017
More literature TM4C123x Stepper Motor Control Product Summary 06 Jul 2015
User guide DRV8846 Evaluation Module User Guide (Rev. A) 18 Mar 2015

Design & development

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Evaluation board

DRV8846EVM — DRV8846 Dual H-Bridge Stepper Motor Driver Evaluation Module

The DRV8846 is a highly integrated stepper motor controller and driver for cameras, printers, projectors, and other automated equipment applications.This device has been optimized to drive a single bipolar stepper with up to 1/32 microstepping with on-chip indexers.

The DRV8846EVM is a platform (...)

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Reference designs

TIDA-00405 — 3D Printer Controller (12V)

This design is a complete system for controlling 3-axis, single extruder-based 3D printers. The system is managed by the MSP430F5529 LaunchPad and utilizes the DRV8846 for precision stepper motor control. The CSD18534Q5A is used as a low-side switch for the hot bed heater, extruder heater, and (...)
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VQFN (RGE) 24 View options

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