1 Features
• Integrated Digital Front End
– Up to 400-kHz I2C Bus Control
– 100-Byte Internal FIFO Interface
– Immersion TS5000-Compliant
– Optional Analog Inputs
• High Voltage Piezo-Haptic Driver
– Drives up to 100 nF at 200 VPP and 300 Hz
– Drives up to 150 nF at 150 VPP and 300 Hz
– Drives up to 330 nF at 100 VPP and 300 Hz
– Drives up to 680 nF at 50 VPP and 300 Hz
– Differential Output
• 105-V Integrated Boost Converter
– Adjustable Boost Voltage
– Adjustable Boost Current Limit
– Integrated Power FET and Diode
– No Transformer Required
• 2-ms Fast Start Up Time
• 3.3- to 5.5-V Wide Supply Voltage Range
• 1.8-V Compatible, VDD Tolerant Digital Pins

2 Applications
• Mobile Phones
• Tablets
• Portable Computers
• Keyboards and Mice
• Electronic Gaming
• Touch Enabled Devices

3 Description
The DRV2665 device is a piezo haptic driver
with integrated 105-V boost switch, integrated
power diode, integrated fully-differential amplifier, and
integrated digital front end. This versatile device is
capable of driving both high-voltage and low-voltage
piezo haptic actuators. The input signal can be driven
as haptic packets over the I2C port or through the
analog inputs.
The digital interface of the DRV2665 device is
available through an I2C compatible bus. A digital
interface relieves the costly processor burden of
the 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 the waveform
after the 2 ms internal start-up procedure. When the
data flow stops or the FIFO under-runs, the DRV2665
device will automatically enter a pop-less shutdown
procedure.
The boost voltage is set using two external resistors,
and the boost current limit is programmable through
the REXT resistor. A typical start-up time of 2 ms
makes the DRV2665 device an ideal piezo driver for
fast haptic responses. Thermal overload protection
prevents the device from being damaged when
overdriven.