TPA032D04 Datasheet, PDF (1/24 Pages) Texas Instruments – 10-W STEREO CLASS-D AUDIO POWER AMPLIFIER

TPA032D04
10-W STEREO CLASS-D AUDIO POWER AMPLIFIER
SLOS203A – DECEMBER 1999 – REVISED MARCH 2000
D Extremely Efficient Class-D Stereo
Operation
DCA PACKAGE
(TOP VIEW)
D Drives L and R Channels, Plus Stereo
Headphones
D 10-W BTL Output Into 4 Ω From 12 V
SHUTDOWN
1
MUTE
2
MODE
3
48
COSC
47
AGND
46
AGND
D 32-W Peak Music Power
D Fully Specified for 12-V Operation
D Low Shutdown Current
D Class-AB Headphone Amplifier
D Thermally-Enhanced PowerPAD™ Surface-
Mount Packaging
D Thermal and Under-Voltage Protection
LINN
4
LINP
5
LCOMP
6
AGND
7
V_DD
8
LPV_DD
9
LOUTP
10
LOUTP
11
PGND
12
45
RINN
44
RINP
43
RCOMP
42
FAULT0
41
FAULT1
40
RPV_DD
39
ROUTP
38
ROUTP
37
PGND
description
PGND
13
LOUTN
14
36
PGND
35
ROUTN
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
LOUTN
15
LPV_DD
16
HPREG
17
HPLOUT
18
HPLIN
19
AGND
20
PV_DD
21
VCP
22
HPDL
23
CP1
24
34
ROUTN
33
RPV_DD
32
HPV_CC
31
HPROUT
30
HPRIN
29
V2P5
28
PV_DD
27
PGND
26
HPDR
25
CP2
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
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 PowerPAD TSSOP 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 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.
Copyright © 2000, Texas Instruments Incorporated
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
1