DRV8662RGPT [TI]
Piezo Haptic Driver with Integrated Boost Converter; 压电式触觉驱动器，集成升压转换器
| 型号： | DRV8662RGPT |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | Piezo Haptic Driver with Integrated Boost Converter |
| 文件： | 总4页 (文件大小：367K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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
integrated 105 V boost switch, integrated power
diode, and integrated fully-differential amplifier. This
versatile device is capable of driving both high-
voltage and low-voltage piezo haptic actuators. The
input signal can be either differential or single-ended.
The DRV8662 supports four GPIO-controlled gains:
28.8 dB, 34.8 dB, 38.4 dB, and 40.7 dB.
•
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
•
Integrated Boost Converter
The boost voltage is set using two external resistors,
and the boost current limit is programmable via the
REXT resistor. The boost converter architecture will
not allow the demand on the supply current to exceed
the limit set by the REXT resistor; therefore, the
DRV8662 is well-suited for portable applications. This
feature also allows the user to optimize the DRV8662
circuit for a given inductor based on the desired
performance requirements.
–
–
–
–
Adjustable Boost Voltage
Adjustable Current Limit
Integrated Power FET and Diode
No Transformer Required
•
•
•
•
•
Fast Start Up Time of 1.5 ms
Wide Supply Voltage Range of 3.0 V to 5.5 V
1.8V Compatible Digital Pins
Thermal Protection
A typical start-up time of 1.5 ms makes the DRV8662
an ideal piezo driver for fast haptic responses.
Thermal overload protection prevents the device from
being damaged when overdriven.
Available in a 4 mm × 4 mm × 0.9 mm QFN
package (RGP)
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APPLICATIONS
•
•
•
•
•
Mobile Phones
Tablets
Portable Computers
Keyboards and Mice
Touch Enabled Devices
VBAT
L1
CBOOST
Boost
Converter
R1
CPUMP
REXT
DRV8662
R2
IN+
IN-
+
Piezo
Actuator
Gain
–
EN
GAIN0
GAIN1
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.
PACKAGE MATERIALS INFORMATION
www.ti.com
14-Jul-2012
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device
Package Package Pins
Type Drawing
SPQ
Reel
Reel
A0
B0
K0
P1
W
Pin1
Diameter Width (mm) (mm) (mm) (mm) (mm) Quadrant
(mm) W1 (mm)
DRV8662RGPR
DRV8662RGPT
QFN
QFN
RGP
RGP
20
20
3000
250
330.0
180.0
12.4
12.4
4.25
4.25
4.25
4.25
1.15
1.15
8.0
8.0
12.0
12.0
Q2
Q2
Pack Materials-Page 1
PACKAGE MATERIALS INFORMATION
www.ti.com
14-Jul-2012
*All dimensions are nominal
Device
Package Type Package Drawing Pins
SPQ
Length (mm) Width (mm) Height (mm)
DRV8662RGPR
DRV8662RGPT
QFN
QFN
RGP
RGP
20
20
3000
250
367.0
210.0
367.0
185.0
35.0
35.0
Pack Materials-Page 2
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