Datasheet
Table Of Contents
- FEATURES
- APPLICATIONS
- DESCRIPTION
- PINOUT INFORMATION
- ABSOLUTE MAXIMUM RATINGS
- THERMAL INFORMATION
- RECOMMENDED OPERATING CONDITIONS
- ELECTRICAL CHARACTERISTICS
- TIMING REQUIREMENTS
- TYPICAL CHARACTERISTICS
- SYSTEM DIAGRAMS
- APPLICATION INFORMATION
- ECCENTRIC ROTATING MASS MOTORS (ERM)
- LINEAR RESONANCE ACTUATORS (LRA)
- AUTO-RESONANCE ENGINE FOR LRA
- OPEN LOOP OPERATION FOR LRA
- SMART LOOP ARCHITECTURE
- AUTO CALIBRATION
- WAVEFORM LIBRARIES
- WAVEFORM SEQUENCER
- LIBRARY PARAMETERIZATION
- REAL-TIME PLAYBACK (RTP) MODE
- MULTI-MODE INPUT PIN (IN/TRIG)
- DEVICE ENABLE
- CONSTANT VIBRATION STRENGTH
- EDGE RATE CONTROL
- CAPACITOR SELECTION
- MODES OF OPERATION
- BLOCK DIAGRAM
- GENERAL I2C OPERATION
- SINGLE-BYTE AND MULTIPLE-BYTE TRANSFERS
- SINGLE-BYTE WRITE
- MULTIPLE-BYTE WRITE AND INCREMENTAL MULTIPLE-BYTE WRITE
- SINGLE-BYTE READ
- MULTIPLE-BYTE READ
- REGISTER MAP
- DEVICE PROGRAMMING
- WAVEFORM LIBRARY EFFECTS LIST
- PCB LAYOUT RECOMMENDATIONS
I2C
I/F
Driver
VDD
GND
SDA
I2C
Control
Feedback
Detection
SCL
Playback Engine
Auto Calibration
Auto Diagnostic
LRA or
DC Motor
DRV2605
IN/Trigger
2.5 V – 5.5 V
OUT+
OUT-
EN
ROM
REG
C
VREG
DRV2605
www.ti.com
SLOS774A –DECEMBER 2012–REVISED DECEMBER 2012
Haptic Driver for ERM and LRA with Built-In Library and Smart Loop Architecture
Check for Samples: DRV2605
1
FEATURES
DESCRIPTION
The DRV2605 is designed to give extremely flexible
• Flexible Haptic/Vibra Driver
haptic control of ERM and LRA actuators over a
– LRA (Linear Resonance Actuator)
shared I
2
C compatible bus. This relieves the host
– ERM (Eccentric Rotating Mass)
processor from ever generating pulse-width
modulated (PWM) drive signals, saving both costly
• I
2
C Controlled Digital Playback Engine
timer interrupts and hardware pins.
– Royalty-Free Integrated Immersion Library
The DRV2605 gives royalty-free access to an
– Real-Time Playback Mode via I
2
C
extensive integrated library (100+ effects) from
• Smart Loop Architecture
(1)
Immersion for ERM and LRA. This eliminates the
– Automatic Overdrive/Braking (ERM/LRA)
need to design haptic waveforms.
– Automatic Resonance Tracking (LRA)
Additionally, the real-time playback mode allows the
– Automatic Actuator Diagnostic (ERM/LRA)
host processor to bypass the library playback engine
and play waveforms directly from the host via I2C.
– Automatic Level Calibration (ERM/LRA)
The DRV2605 also contains a smart loop
• Audio To Haptics Mode
architecture, which allows effortless auto resonant
• Optional PWM Input with 0% to 100% Duty
drive for LRA as well as feedback-optimized ERM
Cycle Control Range
drive. This feedback gives automatic overdrive and
• Optional Analog Input Control
braking, which creates a simplified input waveform
paradigm as well as reliable motor control and
• Optional Hardware Trigger Pin
consistent motor performance. The audio-to-haptics
• Efficient Output Drive
mode automatically converts an audio input signal to
• Fast Start Up Time
meaningful haptic effects.
• Constant Acceleration Over Supply Voltage
The DRV2605 features a trinary-modulated output
• 1.8 V Compatible, VDD Tolerant Digital Pins
stage, providing greater efficiency than linear-based
output drivers. The 9-ball WCSP footprint, flexible
• Available in a 9-Ball, 0.5 mm Pitch WCSP
operation, and low component count make the
(1)
Patent pending control algorithm
DRV2605 the ideal choice for portable and touch-
enabled vibratory and haptic applications.
APPLICATIONS
• Mobile Phones
• Tablets
• Touch-Enabled Devices
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright © 2012, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.