Haptic Driver 9-Pin DS-BGA T/R

The DRV2605L device is a low-voltage haptic driver which includes a haptic-effect library and provides a closed-loop actuator-control system for high-quality haptic feedback for ERM and LRA. This schema helps improve actuator performance in terms of acceleration consistency, start time, and brake time and is accessible through a shared I2C compatible bus or PWM input signal. The DRV2605L device offers a licensed version of TouchSense 2200 software from Immersion which eliminates the need to design haptic waveforms because the software includes over 100 licensed effects (6 ERM libraries and 1 LRA library) and audio-to-vibe features. Additionally, the real-time playback mode allows the host processor to bypass the library playback engine and play waveforms directly from the host through I2C. The smart-loop architecture inside the DRV2605L device allows simple auto-resonant drive for the LRA as well as feedback-optimized ERM drive allowing for automatic overdrive and braking. This architecture creates a simplified input waveform interface as well as reliable motor control and consistent motor performance. The DRV2605L device also features automatic transition to an open-loop system in the event that an LRA actuator is not generating a valid back-EMF voltage. When the LRA generates a valid back-EMF voltage, the DRV2605L device automatically synchronizes with the LRA. The DRV2605L also allows for open-loop driving through the use of internally-generated PWM. Additionally, the audio-to-vibe mode automatically converts an audio input signal to meaningful tactile effects. For an important notice regarding Immersion software, see the Legal Noticesection.

Flexible Haptic and Vibration Driver

• LRA (Linear Resonance Actuator)
• ERM (Eccentric Rotating Mass)

I²C-Controlled Digital Playback Engine

• Waveform Sequencer and Trigger
• Real-Time Playback Mode through I²C
• I²C Dual-Mode Drive (Open and
  Closed Loop)

Smart-Loop Architecture⁽¹⁾

• Automatic Overdrive and Braking
• Automatic Resonance Tracking and
  Reporting (LRA Only)
• Automatic Actuator Diagnostic
• Automatic Level Calibration
• Wide Support for Actuator Models

Licensed Immersion TouchSense^® 2200 features:

• Integrated Immersion Effect Library
• Audio-to-Vibe

Drive Compensation Over Battery Discharge

Wide Voltage Operation (2 V to 5.2 V)

Efficient Differential Switching Output Drive

PWM Input With 0% to 100% Duty-Cycle
Control Range

Hardware Trigger Input

Fast Start-up Time

1.8 V Compatible, V_DD-Tolerant Digital Interface