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MAX11835 Datasheet(PDF) 1 Page - Maxim Integrated Products

Part # MAX11835
Description  Efficient, High-Voltage, TacTouch?? Haptic Actuator Controller with I2C Interface
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX11835 Datasheet(HTML) 1 Page - Maxim Integrated Products

  MAX11835_V01 Datasheet HTML 1Page - Maxim Integrated Products  
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Efficient, High-Voltage, TacTouch™, Haptic
Actuator Controller with I2C Interface
19-5291; Rev 2; 4/15
Functional Diagram appears at end of data sheet.
General Description
The MAX11835 haptic (tactile) actuator controller pro-
vides a complete solution to drive haptic actuators to
add haptic feedback to products featuring user-touch
interfaces. The MAX11835 drives actuators including
single-layer, multilayer piezo, or electroactive polymer
actuators. The device efficiently generates any type of
user-programmable waveform including sine waves,
trapezoidals, squares, and pulses to drive the piezo
loads to create custom haptic sensations. The low-power
device directly interfaces with an application processor
or host controller through an I2C interface and integrates
various blocks including a boost regulator, pattern stor-
age memory, and waveform generator block in one
package, thus providing a complete haptic feedback
controller solution.
The MAX11835 contains a boost regulator that uses
an external flyback to efficiently generate high-voltage
waveforms up to 250V to drive haptic actuators while
limiting current drain. The boost regulator features an
internal n-channel MOSFET with current limit to control
the drain from the battery or power supply.
The MAX11835 features user-programmable haptic feed-
back pattern storage memory that drives the waveform
generator with piecewise linear data using 8-bit resolu-
tion. The device also offers a single trigger interface to
allow the implementation of fast haptics directly from the
touch controller. This allows use of multiple controllers in
parallel to provide haptic sensations for larger displays.
The device provides smart low-power and standby
modes to reduce power consumption before, during,
and after waveform generation. The MAX11835 enters
low-power mode after a haptic event to automatically
save power.
The MAX11835 offers a fast 400kHz I2C serial interface
to allow programming of various modes of operation,
status checking, and haptic waveforms. The operat-
ing supply range is 1.7V to 3.6V for the digital supply
(DVDD) and 2.7V to 5.25V for the boost supply (BVDD)
and analog supply (AVDD).
Mobile Communication Devices
PDA, GPS, and Media Players
Notebooks, Netbooks, and e-Readers
Handheld Gaming Consoles
Keypads and Keyboards
S Supports Multiple High- or Low-Voltage Haptic
Single-Layer Piezo Actuators
Multilayer Piezo Actuators
Electroactive Polymers
S Create Custom User-Programmable Waveforms
with Up to 8-Bit Resolution
S On-Chip, Multiple Haptic Waveform Storage Up to
192 Bytes
S Analog Input Through AIN
Provides Boost Tracking Up to 300Hz Signal
Provides Up/Down Scaling for Small/Large
Amplitude Signals
S TRIG to Optionally Start a Preprogrammed Haptic
Waveform—Up to 16 Stored Waveforms
S On-Chip DC Boost Regulator
On-Chip 30V High-Voltage Boost Switch with
Programmable Maximum Peak Current
Flyback Converter Generates High-Voltage
Efficient Design to Minimize Drain on Battery
S DIS Input to Disable or Enter Lower Power Boost
Operation During High-Current Events
S 1.7V to 3.6V Digital Supply
S Boost/Flyback (BVDD) and Analog Power Supply
(AVDD) 2.7V to 5.25V
S Programmable Low-Power Modes
1µA Deep-Sleep Shutdown Current
S Thermal Shutdown
S Available in 400kHz I2C
S ESD Protection: ±2kV HBM, ±1kV CDM, ±200V MM
Ordering Information
TacTouch is a trademark of Maxim Integrated Products, Inc.
+Denotes a lead(Pb)-free/RoHS-compliant package.
-40NC to +85NC
25 WLP
(2.1mm x 2.1mm)
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.

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