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DRV8845

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35-V, 1.5-A quad H-bridge motor driver with smart tune technology

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Data sheet

DRV8845

ACTIVE
Data sheet Order now

Product details

Number of full bridges 4 Vs (min) (V) 4.5 Vs ABS (max) (V) 40 Full-scale current (A) 1.5 Peak output current (A) 2.5 RDS(ON) (HS + LS) (mΩ) 900 Sleep current (µA) 2 Control mode PWM Control interface Hardware (GPIO) Features Current Regulation, Smart Tune Rating Catalog Operating temperature range (°C) -40 to 125
Number of full bridges 4 Vs (min) (V) 4.5 Vs ABS (max) (V) 40 Full-scale current (A) 1.5 Peak output current (A) 2.5 RDS(ON) (HS + LS) (mΩ) 900 Sleep current (µA) 2 Control mode PWM Control interface Hardware (GPIO) Features Current Regulation, Smart Tune Rating Catalog Operating temperature range (°C) -40 to 125
VQFN (RHH) 36 36 mm² 6 x 6

  • Integrates four H-bridges
  • Can drive different configurations -
    • Two stepper motors
    • Four brushed-DC motors

    • Three brushed-DC motors

    • One stepper and two brushed-DC motors

    • One stepper and one brushed-DC motor

  • Footprint and software compatible with similar drivers from other vendors
  • 4.5-V to 38-V Operating supply voltage range
  • Low RDS(ON): 900 mΩ HS + LS at 24 V, 25°C
  • 1.5-A full-scale current Per Bridge
  • Industry standard PHASE/Ixx Interface

  • Synchronous rectification

  • Full, 1/2 and 1/4 step operation for stepper motors

  • Forward, reverse and coast modes for DC motors

  • Smart tune decay for smooth and quiet operation

  • Supports 3.3 V and 5 V logic inputs

  • Protection features

    • VM undervoltage lockout (UVLO)
    • Charge pump undervoltage (CPUV)
    • Overcurrent protection (OCP)
    • Thermal shutdown (OTSD)

  • Integrates four H-bridges
  • Can drive different configurations -
    • Two stepper motors
    • Four brushed-DC motors

    • Three brushed-DC motors

    • One stepper and two brushed-DC motors

    • One stepper and one brushed-DC motor

  • Footprint and software compatible with similar drivers from other vendors
  • 4.5-V to 38-V Operating supply voltage range
  • Low RDS(ON): 900 mΩ HS + LS at 24 V, 25°C
  • 1.5-A full-scale current Per Bridge
  • Industry standard PHASE/Ixx Interface

  • Synchronous rectification

  • Full, 1/2 and 1/4 step operation for stepper motors

  • Forward, reverse and coast modes for DC motors

  • Smart tune decay for smooth and quiet operation

  • Supports 3.3 V and 5 V logic inputs

  • Protection features

    • VM undervoltage lockout (UVLO)
    • Charge pump undervoltage (CPUV)
    • Overcurrent protection (OCP)
    • Thermal shutdown (OTSD)

The DRV8845 is a quad full-bridge driver for a wide variety of industrial applications. The device can be used for driving up to two stepper motors or up to four brushed-DC motors. Each full-bridge output is rated up to 1.5 A and 38 V. The DRV8845 includes pulse width modulation (PWM) current regulators, along with 2- bit nonlinear DACs (digital-to-analog converters) that allow stepper motors to be controlled in full, half, and quarter steps; and DC motors in forward, reverse, and coast modes.

The PWM current regulator uses the smart tune decay mode for motor audible noise and vibration reduction, increased accuracy, and reduced power dissipation. Internal synchronous rectification control circuitry is provided to improve power dissipation during PWM operation.

Protection features include thermal shutdown with hysteresis (OTSD), undervoltage lockout (UVLO) and overcurrent protection (OCP). Special power up sequencing is not required.

The DRV8845 is supplied in a 6 mm x 6 mm, 36 pin QFN package with exposed pad for enhanced thermal performance.

The DRV8845 is a quad full-bridge driver for a wide variety of industrial applications. The device can be used for driving up to two stepper motors or up to four brushed-DC motors. Each full-bridge output is rated up to 1.5 A and 38 V. The DRV8845 includes pulse width modulation (PWM) current regulators, along with 2- bit nonlinear DACs (digital-to-analog converters) that allow stepper motors to be controlled in full, half, and quarter steps; and DC motors in forward, reverse, and coast modes.

The PWM current regulator uses the smart tune decay mode for motor audible noise and vibration reduction, increased accuracy, and reduced power dissipation. Internal synchronous rectification control circuitry is provided to improve power dissipation during PWM operation.

Protection features include thermal shutdown with hysteresis (OTSD), undervoltage lockout (UVLO) and overcurrent protection (OCP). Special power up sequencing is not required.

The DRV8845 is supplied in a 6 mm x 6 mm, 36 pin QFN package with exposed pad for enhanced thermal performance.
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* Data sheet DRV8845: 38 V, 1.5 A Quad H-Bridge Motor Driver with Smart Tune Technology datasheet (Rev. A) PDF | HTML 21 Dec 2023
Product overview Brushed and Stepper Motor Drivers in Video Surveillance PDF | HTML 22 Feb 2024
Product overview Two New Dual-Stepper Motor Drivers PDF | HTML 22 Feb 2024
Certificate DRV8845EVM EU RoHS Declaration of Conformity (DoC) 28 Mar 2023

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Evaluation board

DRV8845EVM — DRV8845 evaluation module for quad H-bridge motor driver with smart tune technology

The DRV8845 is a quad full-bridge driver for a wide variety of industrial applications. The device can be used for driving up to two stepper motors or up to four brushed-DC motors. Each full-bridge output is rated up to 1.5 A and 38 V. This driver offers Smart tune decay mode for smooth and quiet (...)
User guide: PDF | HTML
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VQFN (RHH) 36 View options
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