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DRV8662RGPR Datasheet(数据表) 1 Page - Texas Instruments

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部件型号  DRV8662RGPR
说明  Piezo Haptic Driver with Integrated Boost Converter
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
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DRV8662RGPR Datasheet(HTML) 1 Page - Texas Instruments

   
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VBAT
+
Boost
Converter
Gain
C
BOOST
IN+
IN-
GAIN0
GAIN1
DRV8662
C
PUMP
Actuator
EN
R1
R2
L1
R
EXT
Piezo
DRV8662
www.ti.com
SLOS737A – JUNE 2011 – REVISED MARCH 2012
Piezo Haptic Driver with Integrated Boost Converter
Check for Samples: DRV8662
1
FEATURES
DESCRIPTION
The DRV8662 is a single-chip piezo haptic driver with
High-Voltage Piezo Haptic Driver
integrated 105 V boost switch, integrated power
Drives up to 100 nF at 200 VPP and 300 Hz
diode, and integrated fully-differential amplifier. This
Drives up to 150 nF at 150 VPP and 300 Hz
versatile device is capable of driving both high-
voltage and low-voltage piezo haptic actuators. The
Drives up to 330 nF at 100 VPP and 300 Hz
input signal can be either differential or single-ended.
Drives up to 680 nF at 50 VPP and 300 Hz
The DRV8662 supports four GPIO-controlled gains:
Differential Output
28.8 dB, 34.8 dB, 38.4 dB, and 40.7 dB.
Integrated Boost Converter
The boost voltage is set using two external resistors,
Adjustable Boost Voltage
and the boost current limit is programmable via the
REXT resistor. The boost converter architecture will
Adjustable Current Limit
not allow the demand on the supply current to exceed
Integrated Power FET and Diode
the limit set by the REXT resistor; therefore, the
No Transformer Required
DRV8662 is well-suited for portable applications. This
feature also allows the user to optimize the DRV8662
Fast Start Up Time of 1.5 ms
circuit for a given inductor based on the desired
Wide Supply Voltage Range of 3.0 V to 5.5 V
performance requirements.
1.8V Compatible Digital Pins
A typical start-up time of 1.5 ms makes the DRV8662
Thermal Protection
an ideal piezo driver for fast haptic responses.
Available in a 4 mm × 4 mm × 0.9 mm QFN
Thermal overload protection prevents the device from
package (RGP)
being damaged when overdriven.
__
APPLICATIONS
__
Mobile Phones
__
Tablets
Portable Computers
__
Keyboards and Mice
Touch Enabled Devices
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 © 2011–2012, 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.




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