IQS390
The IQS390 is a haptics driver capable of driving Linear Resonant Actuator (LRA) motors. The I2C mode features a closed-loop autoresonance algorithm. The autoresonance algorithm matches the resonant frequency of the driven motor in real time. The PWM mode accepts an external Pulse Width Modulated (PWM) signal and a motor drive direction. Both modes implement automatic power mode management and an ultra-low power mode.
1.1 Main Features
- I2C Mode
- I2C interface - Up to Fast Mode Plus (1 MHz)
- Selectable I2C address
- 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
- Direction and direct PWM input
- Select between modes using input pin
- Internal H-bridge protections
- Ultra-low power mode
- Automatic power mode management
- Design simplicity
- PC software for configuration and debugging
- Supply Voltage: 1.71 V to 3.6 V
- QFN20 Package: (3 × 3 × 0.55 mm) - 0.4 mm pitch
1.2 Applications
- Mouse wheel scrolling feedback
- Trackpads
- Doorbells and keypads