Haptic Driver for ERM/LRA with Built-In Library and Smart Loop Architecture - DRV2605


Haptic Driver for ERM/LRA with Built-In Library and Smart Loop Architecture

Recommended alternative parts

  • DRV8662  -  Piezo haptic driver
  • DRV2665  -  Piezo haptic driver with digital front end


The DRV2605 is designed to give extremely flexible haptic control of ERM and LRA actuators over a shared I2C compatible bus. This relieves the host processor from ever generating pulse-width modulated (PWM) drive signals, saving both costly timer interrupts and hardware pins.

The DRV2605 gives royalty-free access to an extensive integrated library (100+ effects) from Immersion for ERM and LRA. This eliminates the need to design haptic waveforms.

Additionally, the real-time playback mode allows the host processor to bypass the library playback engine and play waveforms directly from the host via I2C.

The DRV2605 also contains a smart loop architecture, which allows effortless auto resonant drive for LRA as well as feedback-optimized ERM drive. This feedback gives automatic overdrive and braking, which creates a simplified input waveform paradigm as well as reliable motor control and consistent motor performance. The audio-to-haptics mode automatically converts an audio input signal to meaningful haptic effects.

The DRV2605 features a trinary-modulated output stage, providing greater efficiency than linear-based output drivers. The 9-ball WCSP footprint, flexible operation, and low component count make the DRV2605 the ideal choice for portable and touch-enabled vibratory and haptic applications.


  • Flexible Haptic/Vibra Driver
    • LRA (Linear Resonance
    • ERM (Eccentric Rotating Mass)
  • I2C Controlled Digital Playback Engine
    • Royalty-Free Integrated Immersion Library
    • Real-Time Playback Mode via I2C
  • Smart Loop Architecture(1)
    • Automatic Overdrive/Braking (ERM/LRA)
    • Automatic Resonance Tracking (LRA)
    • Automatic Actuator Diagnostic (ERM/LRA)
    • Automatic Level Calibration (ERM/LRA)
  • Audio To Haptics Mode
  • Optional PWM Input with 0% to 100% Duty Cycle
    Control Range
  • Optional Analog Input Control
  • Optional Hardware Trigger Pin
  • Efficient Output Drive
  • Fast Start Up Time
  • Constant Acceleration Over Supply Voltage
  • 1.8 V Compatible, VDD Tolerant Digital Pins
  • Available in a 9-Ball, 0.5 mm Pitch WCSP
    Patent pending control algorithm

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Parametrics Compare all products in Motor Haptic Driver

Vs (Min) (V)
Vs (Max) (V)
Iq (Typ) (mA)
Shutdown Current (Typ) (uA)
Low-Level Input Voltage (Max) (V)
High-Level Input Voltage (Min) (V)
Startup Time (ms)
Haptic Actuator Type
Input Signal
Vout (Max) (V)
Operating Temperature Range (C)
Package Group
Estimated Package Size (WxL) (mm2)
Approx. Price (US$)
DRV2605 DRV2603 DRV2604L DRV2605L
2.5     2.5     2.0     2.0    
5.5     5.2     5.2     5.2    
  1.5     0.5     0.5    
  1     4.0     4.0    
0.5     0.35     0.5     0.5    
1.3     1.3     1.3     1.3    
0.7     1.3     0.7     0.7    
5.5       5.5     5.5    
-40 to 85     -40 to 85     -40 to 85     -40 to 85    
9DSBGA     10QFN     9DSBGA     9DSBGA    
DSBGA     QFN     DSBGA     DSBGA    
9DSBGA: 1.8 x 1.8: 3.2 mm2     10QFN: 2 x 2: 4 mm2     9DSBGA: 1.8 x 1.8: 3.2 mm2     9DSBGA: 1.8 x 1.8: 3.2 mm2    
1.60 | 1ku     0.70 | 1ku     1.20 | 1ku     1.65 | 1ku    

Companion parts

Part # Name Product Family Comments
TSC2046E   4-Wire Touch Screen Controller with low voltage digital I/O and extended ESD protection   DATA CONVERTERS - TOUCH SCREEN CONTROLLER    Touch screen controller with ultra-low power and fast responce  
MSP430G2553   MSP430G2x53, MSP430G2x13 Mixed Signal Microcontroller   Ultra-low Power - MSP430G2x    Ultra-low power microcontroller  
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