TPA3001D1_15 Datasheet, PDF (1/30 Pages) Texas Instruments – 20-W MONO CLASS-D AUDIO POWER AMPLIFIER

TPA3001D1
www.ti.com
SLOS398E – DECEMBER 2002 – REVISED AUGUST 2010
20-W MONO CLASS-D AUDIO POWER AMPLIFIER
Check for Samples: TPA3001D1
FEATURES
1
•23 20 W Into 8-Ω Load From 18-V Supply (10%
THD+N)
• Short-Circuit Protection (Short to V_CC, Short to
GND, Short Between Outputs)
• Third-Generation Modulation Technique:
– Replaces Large LC Filter With Small,
Low-Cost Ferrite Bead Filter in Most
Applications
– Improved Efficiency
– Improved SNR
• Low Supply Current: 8 mA Typ at 12 V
• Shutdown Control: < 1 mA Typ
• Space-Saving, Thermally-Enhanced
PowerPAD™ Packaging
APPLICATIONS
• LCD Monitors/TVs
• Hands-Free Car Kits
• Powered Speakers
DESCRIPTION
The TPA3001D1 (sometimes referred to as
TPA3001) is a 20-W monaural bridge-tied load (BTL)
class-D audio power amplifier (class-D amp) 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,
or 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 (TPA3001) 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
80
8Ω
70
4Ω
60
50
40
30
20
10
0
0
V_CC = 18 V
4
8
12
16
20
P_O − Output Power − W
MAXIMUM OUTPUT POWER
vs
LOAD IMPEDANCE
21
19
V_CC = 18 V
17
15
V_CC = 15 V
13
11
V_CC = 12 V
9
7 _{TA = 25°C,}
10% THD Maximum
5
3.6 4
5
6
7
8
9
10
Z_L − Load Impedance − Ω
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.
PowerPAD is a trademark of Texas Instruments.
2
All other trademarks are the property of their respective owners.
3
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 © 2002–2010, Texas Instruments Incorporated