TPA3001D1 Datasheet, PDF (1/26 Pages) Texas Instruments – 20 W MONO CLASS D AUDIO POWER AMPLIFIER

TPA3001D1
SLOS398A − DECEMBER 2002 − REVISED APRIL 2003
20ĆW MONO CLASSĆD AUDIO POWER AMPLIFIER
FEATURES
D 20 W Into 8-Ω Load From 18-V Supply
(10% THD+N)
D Short Circuit Protection (Short to V_CC, Short
to GND, Short Between Outputs)
D Third-Generation Modulation Technique:
− Replaces Large LC Filter With Small,
Low-Cost Ferrite Bead Filter in Most
Applications
− Improved Efficiency
− Improved SNR
D Low Supply Current . . . 8 mA Typ at 12 V
D Shutdown Control . . . <1 µA Typ
D Space-Saving, Thermally-Enhanced
PowerPAD Packaging
APPLICATIONS
D LCD Monitors/TVs
D Hands-Free Car Kits
D Powered Speakers
DESCRIPTION
The TPA3001D1 is a 20-W mono bridge-tied load (BTL)
class-D audio power amplifier with high efficiency,
eliminating the need for heat sinks. The TPA3001D1
can drive 4-Ω or 8-Ω speakers with only a ferrite bead
filter required to reduce EMI.
The gain of the amplifier is controlled by two input
terminals, GAIN1 and GAIN0. This allows the amplifier
to be configured for a gain of 12, 18, 23.6, and 36 dB.
The differential input stage provides high common
mode rejection and improved power supply rejection.
The amplifier also includes depop circuitry to reduce the
amount of pop at power-up and when cycling
SHUTDOWN.
The TPA3001D1 is available in the 24-pin thermally
enhanced TSSOP package (PWP) which eliminates the
need for an external heat sink.
EFFICIENCY
vs
OUTPUT POWER
90
MAXIMUM OUTPUT POWER
vs
LOAD IMPEDANCE
21
80
8Ω
70
4Ω
19
VCC = 18 V
17
60
15
VCC = 15 V
50
13
40
11
30
VCC = 12 V
20
VCC = 18 V
10
00
4
8
12
16
20
PO − Output Power − W
9
7 TA = 25°C,
10% THD Maximum
5
3.6 4 5 6 7 8 9 10
RL − Load Impedance − Ω
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.
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.
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Copyright  2002−2003, Texas Instruments Incorporated
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