TPA005D14 Datasheet, PDF (1/29 Pages) Texas Instruments – 2-W STEREO CLASS-D AUDIO POWER AMPLIFIER

TPA005D14
2-W STEREO CLASS-D AUDIO POWER AMPLIFIER
SLOS240A – AUGUST 1999 – REVISED MARCH 2000
D Choose TPA2000D2 For Upgrade
D Extremely Efficient Class-D Stereo
DCA PACKAGE
(TOP VIEW)
Operation
D Drives L and R Channels, Plus Stereo
SHUTDOWN
1
MUTE
2
48
COSC
47
AGND
Headphones
MODE
3
46
AGND
D 2-W BTL Output Into 4 Ω
D 5-W Peak Music Power
D Fully Specified for 5-V Operation
D Low Quiescent Current
D Shutdown Control . . . 0.2 µA
D Class-AB Headphone Amplifier
D Thermally-Enhanced PowerPAD™ Surface
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
Mount Packaging
PGND
13
36
PGND
D Thermal, Over-Current, and Under-Voltage
Protection
description
LOUTN
14
LOUTN
15
LPV_DD
16
HPDL
17
HPLOUT
18
35
ROUTN
34
ROUTN
33
RPV_DD
32
HPDR
31
HPROUT
The TPA005D14 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 TPA005D14 to
HPLIN
19
AGND
20
PV_DD
21
VCP
22
CP3
23
CP2
24
30
HPRIN
29
V2P5
28
PV_DD
27
PGND
26
CP4
25
CP1
be configured as a bridge-tied load (BTL) amplifier
capable of delivering up to 2 W of continuous
average power into a 4-Ω load at 0.4% THD+N from a 5-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 quiescent current to 0.2 µA, making the device ideal for
battery-powered applications.
A full range of protection circuitry is included to increase device reliability: thermal, over-current, and
under-voltage shutdown, with two status feedback terminals for use when any error condition is encountered.
The high switching frequency of the TPA005D14 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 TPA005D14 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
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