Product details

Haptic actuator type ERM, LRA Features Auto Resonance Input signal PWM, Analog Vs (Min) (V) 2.5 Vs (Max) (V) 5.2 Output voltage (Max) (V) 3.6 Vout (Max) (V p-p) 10.4 Iq (Typ) (mA) 1.7 Shutdown current (ISD) (uA) 0.3 Startup time (ms) 1.3 Operating temperature range (C) -40 to 85
Haptic actuator type ERM, LRA Features Auto Resonance Input signal PWM, Analog Vs (Min) (V) 2.5 Vs (Max) (V) 5.2 Output voltage (Max) (V) 3.6 Vout (Max) (V p-p) 10.4 Iq (Typ) (mA) 1.7 Shutdown current (ISD) (uA) 0.3 Startup time (ms) 1.3 Operating temperature range (C) -40 to 85
WQFN (RUN) 10 4 mm² 2 x 2
  • Flexible Haptic/Vibra Driver
    • LRA (Linear Resonance Actuator)
    • ERM (Eccentric Rotating Mass)
  • Auto Resonance Tracking for LRA
    • No Frequency Calibration Required
    • Automatic Drive Commutation
    • Automatic Braking Algorithm
    • Wide Input PWM Frequency Range
  • Constant Vibration Strength Over Supply
  • Automatic Input Level Translation
  • 0% to 100% Duty Cycle Control Range
  • Fast Start Up Time
  • Differential Drive from Single-Ended Input
  • Wide Supply Voltage Range of 2.5 V to 5.2 V
  • Immersion TouchSense® 3000 Compatible
  • 1.8-V Compatible, 5-V Tolerant Digital Pins
  • Available in a 2 mm × 2 mm × 0.75 mm Leadless QFN Package (RUN)
  • Flexible Haptic/Vibra Driver
    • LRA (Linear Resonance Actuator)
    • ERM (Eccentric Rotating Mass)
  • Auto Resonance Tracking for LRA
    • No Frequency Calibration Required
    • Automatic Drive Commutation
    • Automatic Braking Algorithm
    • Wide Input PWM Frequency Range
  • Constant Vibration Strength Over Supply
  • Automatic Input Level Translation
  • 0% to 100% Duty Cycle Control Range
  • Fast Start Up Time
  • Differential Drive from Single-Ended Input
  • Wide Supply Voltage Range of 2.5 V to 5.2 V
  • Immersion TouchSense® 3000 Compatible
  • 1.8-V Compatible, 5-V Tolerant Digital Pins
  • Available in a 2 mm × 2 mm × 0.75 mm Leadless QFN Package (RUN)

The DRV2603 is a haptic driver designed specifically to solve common obstacles in driving both Linear Resonance Actuator (LRA) and Eccentric Rotating Mass (ERM) haptic elements. The DRV2603 is designed for low latency, high efficiency, and more drive strength for actuators commonly used for tactile feedback in the portable market.

LRA actuators typically have a narrow frequency band over which they have an adequate haptic response. This frequency window is typically ±2.5 Hz wide or less, so driving an LRA actuator presents a challenge. The DRV2603 solves this problem by employing auto resonance tracking, which automatically detects and tracks the LRA resonant frequency in real time. This means that any input PWM frequency within the input range (10 kHz to 250 kHz) will automatically produce the correct resonant output frequency. As an additional benefit, the DRV2603 implements an automatic braking algorithm to prevent LRA ringing at the end of waveforms, leaving the user with a crisp haptic sensation.

For both ERM and LRA actuators, the automatic input level translation solves issues with low voltage PWM sources without adding additional external components, so if the digital I/O levels vary, the output voltage does not change. The DRV2603 also has supply correction that ensures no supply regulation is required for constant vibration strength, allowing an efficient, direct-battery connection.

The DRV2603 is a haptic driver designed specifically to solve common obstacles in driving both Linear Resonance Actuator (LRA) and Eccentric Rotating Mass (ERM) haptic elements. The DRV2603 is designed for low latency, high efficiency, and more drive strength for actuators commonly used for tactile feedback in the portable market.

LRA actuators typically have a narrow frequency band over which they have an adequate haptic response. This frequency window is typically ±2.5 Hz wide or less, so driving an LRA actuator presents a challenge. The DRV2603 solves this problem by employing auto resonance tracking, which automatically detects and tracks the LRA resonant frequency in real time. This means that any input PWM frequency within the input range (10 kHz to 250 kHz) will automatically produce the correct resonant output frequency. As an additional benefit, the DRV2603 implements an automatic braking algorithm to prevent LRA ringing at the end of waveforms, leaving the user with a crisp haptic sensation.

For both ERM and LRA actuators, the automatic input level translation solves issues with low voltage PWM sources without adding additional external components, so if the digital I/O levels vary, the output voltage does not change. The DRV2603 also has supply correction that ensures no supply regulation is required for constant vibration strength, allowing an efficient, direct-battery connection.

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Technical documentation

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Type Title Date
* Data sheet DRV2603 Haptic Drive With Auto-Resonance Detection for Linear Resonance Actuators (LRA) datasheet (Rev. C) 10 Aug 2016
Application note Haptic Implementation Considerations for Mobile and Wearable Devices (Rev. A) 14 Nov 2021
Application note Benefits of Auto-Resonance Tracking (Rev. A) 11 Nov 2021
Application note LRA Actuators: How to Move Them? 03 Nov 2014
Technical article DRV2605 + MSP430: Moving the world! 12 Oct 2014
More literature Haptic Solutions for Wearable Devices (Rev. A) 30 Sep 2014
Application note Haptic Energy Consumption 04 Jun 2014
User guide DRV2603 ERM/LRA Haptic Driver Evaluation Kit (Rev. B) 24 Sep 2013
More literature Automotive Haptics Solutions 16 Sep 2013
Technical article MSP430 365/24/7: MSP430 microcontrollers in “always on” consumer applications 11 Feb 2013
More literature Haptics: Touch feedback that really moves you (Rev. A) 08 Jan 2013
More literature Haptics: Solutions for ERM and LRA Actuators 18 Dec 2012
More literature DRV2603EVK-CT Quick Start Guide 20 Apr 2012

Design & development

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Evaluation board

DRV2603EVM-CT — DRV2603 Evaluation Module

The DRV2603 is a haptic driver designed to control Linear Resonant Actuators (LRA) and Eccentric Rotating Mass (ERM) motors. The DRV2603 provides many features which help eliminate the design complexities of haptic motor control including reduced solution size, high efficiency output drive, (...)

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Software development kit (SDK)

MSP430-HAPTOUCH-SDK — MSP430TCH5E Capacitive Touch with Haptics Software Development Kit

This is a software development kit for the MSP430TCH5E HAPTOUCH booster pack. It also includes MSP430 Launchpad software (for PC communication) and PC applications (to experience PC gaming) with capacitive touch and Immersion Touchsense 2200™ haptics.

Learn more about the MSP430TCH5E HAPTOUCH (...)
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