VDD

VREG

SDA

SCL

IN+

IN-

VPUMP

GND

SW

VBST

PVDD

FB

OUT+

OUT-

REXT

L1

I2C

Analog

Input

R 1

R 2

Piezo

Actuator

3 V to 5.5 V

DRV2665

DRV2665

www.ti.com

SLOS790 – MAY 2012

Piezo Haptic Driver with Integrated Boost Converter and Digital Front End

Check for Samples: DRV2665

1

FEATURES

DESCRIPTION

The DRV2665 is a piezo haptic driver with integrated

•

Integrated Digital Front End

105

V

boost

switch,

integrated

power

diode,

–

integrated fully-differential amplifier, and integrated

–

Internal 100 Byte FIFO Interface

digital front end. This versatile device is capable of

driving both high-voltage and low-voltage piezo haptic

–

Immersion TS5000 Compliant

actuators. The input signal can be driven as haptic

–

Optional Analog Inputs

•

High Voltage Piezo-Haptic Driver

–

compatible bus. A digital interface relieves the costly

–

processor burden of PWM generation or additional

analog channel requirements in the host system. Any

–

writes to the internal first-in, first-out buffer (FIFO) will

–

automatically wake up the device and begin playing

–

Differential Output

the

waveform

after

the

2

ms

internal

startup

procedure. When the data flow stops or the FIFO

•

Integrated 105 V Boost Converter

under-runs, the DRV2665 will automatically enter a

–

Adjustable Boost Voltage

pop-less shutdown procedure.

–

Adjustable Boost Current Limit

The boost voltage is set using two external resistors,

–

Integrated Power FET and Diode

and the boost current limit is programmable via the

–

No Transformer Required

the DRV2665 an ideal piezo driver for fast haptic

•

Fast Start Up Time of 2 ms (typical)

responses. Thermal overload protection prevents the

•

Wide Supply Voltage Range of 3 V to 5.5 V

device from being damaged when overdriven.

•

1.8 V Compatible, 5 V Tolerant Digital Pins

__

•

Available in a 4 mm × 4 mm × 0.9 mm QFN

__

package (RGP)

•

Pin-Similar with DRV8662

APPLICATIONS

•

Mobile Phones

•

Tablets

•

Portable Computers

•

Keyboards and Mice

•

Electronic Gaming

•

Touch Enabled Devices

space

space

space

space

For more information, please contact your local TI sales representative.

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.