DRV2624 Datasheet, PDF (1/79 Pages) Texas Instruments – DRV2624 Ultra Low Power Closed-Loop LRA/ERM Haptic Driver with Internal Memory

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
DRV2624
SLOS893A – DECEMBER 2015 – REVISED DECEMBER 2015
DRV2624 Ultra Low Power Closed-Loop LRA/ERM Haptic Driver with Internal Memory
1 Features
•1 Ultra Low-Power Shutdown Mode
• Low-Power Standby State
• Resistance-Based Actuator Diagnostics
• SimpleDrive One-Wire Vibration Scheme
• Automatic Resonance Tracking and Reporting
• Automatic Overdrive and Braking
• Automatic Level Calibration
• Drive Compensation Over Battery Discharge
• Configurable Battery Monitor with Power
Preservation
• Off-Resonance Driving with Auto-Braking
• LRA Waveform Shape Selection
• Integrated RAM with Loopable Waveform
Sequencer
• Real-Time Playback (RTP) Mode
• I²C-Controlled Digital Playback Engine
• Hardware and Software Trigger Option
• Automatic Transition to Standby with Auto-Brake
• Optional Interrupt Pin
• 1.8-V Compatible, VDD Tolerant Digital Interface
(1) _{Patent pending control algorithm}
3 Description
The DRV2624 device is a haptic driver that relies on
a proprietary closed-loop architecture to deliver
sharp, strong, and consistent haptic effects while
optimizing power consumption.
The internal memory and loopable waveform
sequencer, together with the automatic overdrive and
braking simplifies the process of generating crisp and
optimum haptic effects, reducing the burden imposed
into the processing unit.
The DRV2624 device features an automatic go-to-
standby state and a battery preservation function to
help reduce power consumption without user
intervention. The NRST pin allows for a full shutdown
state for additional power savings.
The waveform shape selection allows for sine-wave
and square-wave drive to customize the haptic feel
as well as the audible performance. Off-resonance
driving with automatic braking simplifies the
implementation of non-resonant haptic solutions.
DEVICE NAME
DRV2624
Device Information⁽¹⁾
PACKAGE
BODY SIZE (MAX)
DSBGA (9)
1.498 mm × 1.361 mm
2 Applications
• Mobile Phones
• Tablets
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Simplified Schematic
2.7 V ± 5.5 VVDD
NRST
TRIG/INTZ
SDA
SCL
1.8 V REG
RAM
Reg
1 kB
Map
Supply
Correction
Battery
Monitor
I²C
I/F
REG
Control and Playback Engine
Loopable
Waveform
Sequencer
Waveform Shape
Select (LRA)
Impedance
Based Actuator
Diagnostics
Off-
Resonance
Driving (LRA)
Automatic
Over-Drive
and Braking
Dynamic and
Programmable
Output Clamp
Automatic Resonance Tracking
and Reporting
Thermal
Protection
GND
VDD
Gate
Drive
Back-EMF
Detection
Short Circuit
Protection _VDD
Gate
Drive
OUT+
LRA
M or
ERM
OUT±
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.