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TPA2100P1

更新时间： 2024-11-15 05:53:31
品牌 Logo 应用领域
德州仪器 - TI 音频放大器
页数 文件大小 规格书
23页 950K
描述
19-VPP Mono Class-D Audio Amplifier for Piezo/Ceramic Speakers

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YZH  
TPA2100P1  
www.ti.com ........................................................................................................................................................................................... SLOS595–DECEMBER 2008  
19-V Mono Class-D Audio Amplifier for Piezo/Ceramic Speakers  
PP  
1
FEATURES  
DESCRIPTION  
2
•
19 VPP Output Load Voltage From a 2.5 V  
Supply  
The TPA2100P1 (sometimes referred to as TPA2100)  
is a mono, Class-D audio power amplifier with  
integrated DC-DC converter designed for piezo and  
ceramic speakers. The TPA2100P1 (TPA2100) is  
capable of driving a ceramic / piezo speaker with  
19 VPP (6.7 VRMS) from a 2.5 V power supply at less  
than 1% THD+N.  
•
Integrated DC-DC Converter Generates 10 V  
Supply  
•
•
•
•
•
•
No External Schottky Diode Required  
Integrated Audio Input Low-Pass Filter  
Small Boost Converter Inductor  
Supply Voltage Range From 2.5 V to 5.5 V  
Selectable Gain of 12 dB, 16 dB, and 24 dB  
The DC-DC converter operates at a fixed frequency  
of 1.2 MHz. The TPA2100P1 (TPA2100) DC-DC  
converter provides a 10 V supply with a minimum  
number of external components. The DC-DC  
converter can be used to drive other components that  
require a 10 V supply voltage (note: audio signal  
must be present for proper functionality of boost  
converter).  
Independent Shutdown Control for the Boost  
Converter and the Audio Amplifier  
•
•
•
•
•
Fast Startup Time: 8 ms  
Low Supply Current: 5.5 mA  
Low Shutdown Current: < 1 µA  
Short-Circuit and Thermal Protection  
Space Saving Package  
The TPA2100P1 (TPA2100) features an integrated  
audio low pass filter that rejects high frequency noise  
(CODEC out-of-band and RF noise) thus improving  
audio fidelity.  
–
2,1 mm × 2,1 mm NanoFree™ WCSP (YZH)  
The TPA2100P1 (TPA2100) has three gain modes of  
12 dB, 16 dB, and 24 dB. The TPA2100P1  
(TPA2100) provides thermal and short circuit  
protection on the boost converter and the Class-D  
audio amplifier. The TPA2100P1 (TPA2100) is  
available in a 16-ball 2,1 mm × 2,1 mm WCSP  
package. The TPA2100P1 (TPA2100) requires only  
one small external inductor for operation.  
APPLICATIONS  
•
•
•
•
•
Wireless or Cellular Handsets  
Portable DVD Player  
Personal Digital Assistants (PDAs)  
Electronic Dictionaries  
Digital Still Cameras  
4.7 mH  
10 nF  
V
IN  
10 mF  
BST VccOUT  
VccIN  
Vdd SW  
2.5 V to  
5.5V  
10 mF  
C
IN  
Analog  
OUT+  
OUT-  
IN-  
5 ~ 10 W  
5 ~ 10 W  
Baseband  
or  
Piezo Speaker  
1 mF  
0.1 ~ 2 mF  
IN+  
CODEC  
C
IN  
Vref  
GAIN  
1 mF  
Digital  
SD  
BaseBand  
SDa  
GND  
GND  
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.  
2
NanoFree is a trademark of Texas Instruments.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2008, Texas Instruments Incorporated  
1234567...23

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