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TPA032D04_16

更新时间： 2024-11-26 02:58:43
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德州仪器 - TI 放大器功率放大器
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28页 626K
描述
10-W STEREO CLASS-D AUDIO POWER AMPLIFIER

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TPA032D04_16 数据手册

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TPA032D04  
10-W STEREO CLASS-D AUDIO POWER AMPLIFIER  
SLOS203B − DECEMBER 1999 − REVISED JUNE 2000  
DCA PACKAGE  
(TOP VIEW)  
D
D
D
D
D
D
D
D
Extremely Efficient Class-D Stereo  
Operation  
Drives L and R Channels, Plus Stereo  
Headphones  
1
48  
47  
46  
45  
44  
43  
42  
41  
40  
39  
38  
37  
36  
35  
34  
33  
32  
31  
30  
29  
28  
27  
26  
25  
SHUTDOWN  
MUTE  
MODE  
LINN  
COSC  
AGND  
AGND  
RINN  
2
3
4
5
6
7
8
9
10-W BTL Output Into 4 Ω From 12 V  
32-W Peak Music Power  
LINP  
RINP  
Fully Specified for 12-V Operation  
Low Shutdown Current  
LCOMP  
AGND  
VDD  
RCOMP  
FAULT0  
FAULT1  
RPVDD  
ROUTP  
ROUTP  
PGND  
PGND  
ROUTN  
ROUTN  
RPVDD  
HPVCC  
HPROUT  
HPRIN  
V2P5  
Class-AB Headphone Amplifier  
LPVDD  
LOUTP  
LOUTP  
PGND  
PGND  
LOUTN  
LOUTN  
LPVDD  
HPREG  
HPLOUT  
HPLIN  
AGND  
PVDD  
Thermally-Enhanced PowerPADSurface-  
Mount Packaging  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
D
Thermal and Under-Voltage Protection  
description  
The TPA032D04 is a monolithic power IC stereo  
audio amplifier that operates in extremely efficient  
Class-D operation, using the high switching speed  
of power DMOS transistors to replicate the analog  
input signal through high-frequency switching of  
the output stage. This allows the TPA032D04 to  
be configured as a bridge-tied load (BTL) amplifier  
capable of delivering up to 10 W of continuous  
average power into a 4-Ω load at 0.5% THD+N  
from a 12-V power supply in the high-fidelity audio  
frequency range (20 Hz to 20 kHz). A BTL  
configuration eliminates the need for external  
PVDD  
VCP  
HPDL  
CP1  
PGND  
HPDR  
CP2  
coupling capacitors on the output. Included is a Class-AB headphone amplifier with interface logic to select  
between the two modes of operation. Only one amplifier is active at any given time, and the other is in  
power-saving sleep mode. Also, a chip-level shutdown control is provided to limit total supply current to 20 µA,  
making the device ideal for battery-powered applications.  
The output stage is compatible with a range of power supplies from 8 V to 14 V. Protection circuitry is included  
to increase device reliability: thermal and under-voltage shutdown, with a status feedback terminal for use when  
any error condition is encountered.  
The high switching frequency of the TPA032D04 allows the output filter to consist of three small capacitors and  
two small inductors per channel. The high switching frequency also allows for good THD+N performance.  
The TPA032D04 is offered in the thermally enhanced 48-pin PowerPADTSSOP surface-mount package  
(designator DCA).  
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.  
PowerPAD is a trademark of Texas Instruments.  
Copyright 2000, Texas Instruments Incorporated  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
1
TI.COM  
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