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Azoteq IQS390 Haptics Driver

Azoteq IQS390 Haptics Driver is designed for Linear Resonant Actuator (LRA) motors. The Azoteq IQS390 supports I2C mode with configurable composite waveforms and a closed-loop autoresonance algorithm that dynamically adjusts to the motor's resonant frequency in real time. It also offers a PWM mode that accepts an external PWM signal and motor drive direction. Both modes incorporate automatic power management and an ultra-low power mode for efficient operation.

Features

  • I2C mode
    • I2C interface up to fast mode plus (1MHz)
    • Selectable I2C address
    • Highly configurable effects
    • Configure and select between multiple effects
    • Fire-and-forget interface
    • Trigger haptic pulse either through I2C or with an input pin
    • Real-time closed-loop autoresonance
    • Internal or external H-bridge
    • Selectable LRA drive frequency
  • PWM mode with direction and direct PWM input
  • Select between modes using the input pin
  • Internal H-bridge protections
  • Ultra-low-power mode
  • Automatic power mode management
  • Design simplicity with PC software for configuration and debugging
  • 1.71V to 3.6V supply voltage
  • QFN20 package (3mm × 3mm × 0.55mm), 0.4mm pitch

Applications

  • Mouse wheel scrolling feedback
  • Trackpads
  • Doorbells and keypads

Block Diagram

Block Diagram - Azoteq IQS390 Haptics Driver

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Published: 2025-01-15 | Updated: 2025-01-22