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DRV2665

更新时间： 2024-11-21 11:46:03
品牌 Logo 应用领域
德州仪器 - TI 驱动器转换器升压转换器
页数 文件大小 规格书
8页 570K
描述
Piezo Haptic Driver with Integrated Boost Converter and Digital Front End

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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 boost switch, integrated power diode,  
V
–
–
–
–
I2C Bus Control up to 400 kHz  
Internal 100 Byte FIFO Interface  
Immersion TS5000 Compliant  
Optional Analog Inputs  
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 via the analog inputs.  
The DRV2665 digital interface is available via an I2C  
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  
•
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  
the waveform after the  
2 ms internal startup  
procedure. When the data flow stops or the FIFO  
under-runs, the DRV2665 will automatically enter a  
pop-less shutdown procedure.  
•
Integrated 105 V Boost Converter  
–
–
–
–
Adjustable Boost Voltage  
Adjustable Boost Current Limit  
Integrated Power FET and Diode  
No Transformer Required  
The boost voltage is set using two external resistors,  
and the boost current limit is programmable via the  
REXT resistor. A typical start-up time of 2 ms makes  
the DRV2665 an ideal piezo driver for fast haptic  
responses. Thermal overload protection prevents the  
device from being damaged when overdriven.  
•
•
•
•
Fast Start Up Time of 2 ms (typical)  
Wide Supply Voltage Range of 3 V to 5.5 V  
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  
L1  
3 V to 5.5 V  
APPLICATIONS  
DRV2665  
C
VDD  
•
•
•
•
•
•
Mobile Phones  
VDD  
SW  
VBST  
PVDD  
Tablets  
VREG  
Portable Computers  
Keyboards and Mice  
Electronic Gaming  
Touch Enabled Devices  
C
VBST  
C
VREG  
R1  
R2  
R
R
PU  
PU  
FB  
SDA  
SCL  
I2C  
IN+  
IN-  
OUT+  
OUT-  
Analog  
Input  
Piezo  
Actuator  
VPUMP  
REXT  
R
EXT  
C
GND  
PUMP  
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.  
12345678

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