Automotive, 50-V, 1.0-A, bipolar stepper motor driver w/integrated current sensing


Product details


Number of full bridges 2 Vs (Min) (V) 4.5 Vs ABS (Max) (V) 50 Full-scale current (A) 1 Peak output current (A) 1.7 RDS(ON) (HS + LS) (mOhms) 1200 Sleep current (uA) 2 Control mode STEP/DIR Control interface Hardware (GPIO), SPI Micro-stepping levels 256 Features Integrated Current Sensing, Open-Load Detection, Smart Tune Rating Catalog Operating temperature range (C) -40 to 125 TI functional safety category Functional Safety-Capable open-in-new Find other Stepper motor drivers

Package | Pins | Size

VQFN (RGE) 24 16 mm² 4 x 4 open-in-new Find other Stepper motor drivers


  • AEC-Q100 Qualified for Automotive
  • Up to 1/256 microstepping
  • Integrated current sense functionality
    • No sense resistors required
  • Smart tune decay technology, Fixed slow, and mixed decay options
  • 4.5 to 45-V Operating supply voltage range
  • Pin to pin RDS(ON) variants:

    - DRV8889/A-Q1: 900 mΩ HS + LS at 25°C

    - DRV8899-Q1: 1200 mΩ HS + LS at 25°C
  • High current capacity per bridge
    • DRV8889/A-Q1: 2.4-A peak, 1.5-A full-scale
    • DRV8899-Q1: 1.7-A peak, 1-A full-scale
  • TRQ_DAC bits to scale full-scale current
  • Configurable off-time PWM chopping
  • Simple STEP/DIR interface
  • SPI with daisy chain support
  • Low-current sleep mode (2 µA)
  • Programmable output slew rate
  • Spread spectrum clocking to minimize EMI
  • Protection features
    • VM undervoltage lockout
    • Overcurrent protection
    • Open load detection
    • Overtemperature warning and shutdown
    • Undertemperature warning
    • Fault condition indication pin (nFAULT)
  • Functional Safety-Capable
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The DRV8899-Q1 is a fully integrated stepper motor driver, supporting up to 1 A full scale current with an internal microstepping indexer, smart tune decay technology, and integrated current sensing. With a simple step/dir interface to manage the direction and step rate, DRV8899-Q1 supports up to 1/256 levels of microstepping to enable a smooth motion profile. Integrated current sensing eliminates the need for two external resistors, saving board space and cost. DRV8899-Q1 provides 8 decay mode options including: smart tune, slow, and mixed decay options. Smart tune automatically adjusts for optimal current regulation performance and compensates for any motor variation and aging effects. The device also includes an integrated torque DAC which allows for the controller to scale the output current through SPI without needing to scale the VREF voltage reference. A low-power sleep mode is provided for very low standby current using an nSLEEP pin. The device features full duplex, 4-wire synchronous SPI communication, with daisy chain support for up to 63 devices connected in series, for configurability and detailed fault reporting. View our full portfolio of stepper motor drivers on

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DRV8889-Q1 ACTIVE Automotive, 50-V, 1.5-A, bipolar stepper motor driver w/integrated current sensing & stall detection Pin to pin part with stall detection

Technical documentation

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Type Title Date
* Data sheet DRV8899-Q1 Automotive Stepper Driver with Integrated Current Sense and 1/256 Micro-Stepping datasheet (Rev. B) Apr. 20, 2021
Application note Daisy Chain Implementation for Serial Peripheral Interface (Rev. A) Apr. 07, 2021
Functional safety information DRV8899-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA Mar. 08, 2021
Application note Methods to Configure Current Regulation for Brushed and Stepper Motors (Rev. B) Jan. 19, 2021
Application note Smart Tune for Quiet and Smooth Stepper Motor Operation (Rev. A) Nov. 01, 2020
White paper Stepper Motors Made Easy with Smart Tune (Rev. C) Nov. 01, 2020
Application note Advantages of Integrated Current Sensing (Rev. A) Oct. 09, 2020
Technical article Drive unipolar stepper motors as bipolar stepper motors with a simple wiring reconfiguration Apr. 09, 2020
Technical article How stepper motors improve noise and efficiency in automotive system design Nov. 19, 2019
Application note Open Load Detection in Intergrated Drivers (Rev. A) Nov. 07, 2019
User guide DRV8899-Q1EVM GUI User's Guide (Rev. A) Oct. 11, 2019
User guide DRV8899-Q1 EMV User's Guide Oct. 03, 2019
White paper How smart tune regulates current in stepper motors (Rev. A) Mar. 19, 2019
Application note Protecting Automotive Motor Drive Systems from Reverse Polarity Conditions (Rev. A) Feb. 19, 2019
Application note Smart Tuning for Efficient Stepper Driving Nov. 20, 2018
Technical article Getting smart about tuning your stepper motor Aug. 23, 2018
Technical article The story of motor-drive integration Jan. 09, 2017

Design & development

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Hardware development

document-generic User guide

The DRV8899-Q1 evaluation module (EVM) allows easy evaluation of the DRV8899-Q1 device. The DRV8899-Q1 device is an integrated, dual H-bridge driver for automotive stepper motor applications.

The evaluation module allows the device to be configured for all of its functional modes including (...)

  • 4.5-V to 45-V operating voltage range
  • Full stepping and microstepping modes down to 1/256
  • Programmable decay modes for stepper tuning, including dynamic decay and ripple control smart-tuning modes
  • Integrated current sensing function
  • SPI with daisy chain support

Design tools & simulation

SLVMDE8.ZIP (66 KB) - IBIS Model

CAD/CAE symbols

Package Pins Download
VQFN (RGE) 24 View options

Ordering & quality

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