TPA2013D1 Datasheet, PDF (1/28 Pages) Texas Instruments – 2.7-W CONSTANT OUTPUT POWER CLASS-D AUDIO AMPLIFIER WITH INTEGRATED BOOST CONVERTER

TPA2013D1
www.ti.com
SLOS520 – AUGUST 2007
2.7-W CONSTANT OUTPUT POWER CLASS-D AUDIO AMPLIFIER WITH INTEGRATED
BOOST CONVERTER
FEATURES
1
• High Efficiency Integrated Boost Converter
(Over 90% Efficiency)
• 2.2-W into an 8-Ω Load from a 3.6-V Supply
• 2.7-W into an 4-Ω Load from a 3.6-V Supply
• Operates from 1.8 V to 5.5 V
• Efficient Class-D Prolongs Battery Life
• Independent Shutdown for Boost Converter
and Class-D Amplifier
• Differential Inputs Reduce RF Common Noise
• Built-in INPUT Low Pass Filter Decreases RF
and Out of Band Noise Sensitivity
• Synchronized Boost and Class-D Eliminates
Beat Frequencies
• Thermal and Short-Circuit Protection
• Available in 2.275 mm x 2.275 mm 16-ball
WCSP and 4 mm x 4 mm 20-Lead QFN
Packages
• 3 Selectable Gain Settings of 2 V/V, 6 V/V, and
10 V/V
APPLICATIONS
• Cell Phones
• PDA
• GPS
• Portable Electronics
DESCRIPTION
The TPA2013D1 is a high efficiency Class-D audio
power amplifier with an integrated boost converter. It
drives up to 2.7 W (10% THD+N) into a 4 Ω speaker.
With 85% typical efficiency, the TPA2013D1 helps
extend battery life when playing audio.
The built-in boost converter generates the voltage rail
for the Class-D amplifier. This provides a louder
audio output than a stand-alone amplifier connected
directly to the battery. It also maintains a consistent
loudness, regardless of battery voltage. Additionally,
the boost converter can be used to supply external
devices.
The TPA2013D1 has an integrated low pass filter to
improve RF rejection and reduce out-of-band noise,
increasing the signal to noise ratio (SNR). A built-in
PLL synchronizes the boost converter and Class-D
switching frequencies, thus eliminating beat
frequencies and improving audio quality. All outputs
are fully protected against shorts to ground, power
supply, and output-to-output shorts.
To Battery
10 mF
C_IN
Differential
Input
1 mF
C_IN
Gain (V_CC/Float/GND)
ShutDown Boost
GPIO
ShutDown ClassD
R1
50 kΩ
2.2 to 6.2 mH
R2
500 kΩ
22 mF
V_DD SW V_CCFB V_CCOUT V_CCIN
IN–
IN+
GAIN
SDb
SDd
TPA2013D1
VOUT+
VOUT–
AGND
PGND
1 mF
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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.
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 © 2007, Texas Instruments Incorporated