TPA2015D1_15 Datasheet, PDF (1/26 Pages) Texas Instruments – 2 W Constant Output Power Class-D Audio Amplifier With Adaptive Boost Converter and Battery Tracking SpeakerGuard™ AGC

TPA2015D1
www.ti.com
SLOS638A – NOVEMBER 2011 – REVISED NOVEMBER 2011
2 W Constant Output Power Class-D Audio Amplifier With Adaptive Boost Converter and
Battery Tracking SpeakerGuard™ AGC
Check for Samples: TPA2015D1
FEATURES
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•2 Built-In SpeakerGuard^TM Automatic Gain
Control (AGC) with Enhanced Battery Tracking
– Limits Battery Current Consumption
– Prevents Audio Clipping
• 2 W into 8 Ω Load From 3.6 V Supply (6% THD)
• Integrated Adaptive Boost Converter
– Increases Efficiency at Low Output Power
• Low Quiescent Current of 1.7 mA from 3.6 V
• Operates From 2.5 V to 5.2 V
• Thermal and Short-Circuit Protection with
Auto Recovery
• Three Gain Settings: 6 dB, 15.5 dB, and 20 dB
• Independent Control for Boost and Class-D
• Pin-to-Pin Compatible with TPA2013D1
• Available in 1.954 mm × 1.954 mm 16-ball
WCSP Package
APPLICATIONS
• Cell Phones, PDA, GPS
• Portable Electronics and Speakers
DESCRIPTION
The TPA2015D1 is a high efficiency Class-D audio
power amplifier with battery-tracking SpeakerGuard™
AGC technology and an integrated adaptive boost
converter that enhances efficiency at low output
power. It drives up to 2 W into an 8 Ω speaker (6%
THD). With 85% typical efficiency, the TPA2015D1
helps extend battery life when playing audio.
The built-in boost converter generates a 5.5 V supply
voltage for the Class-D amplifier. This provides a
louder audio output than a stand-alone amplifier
directly connected to the battery. The
SpeakerGuard^TM AGC adjusts the Class-D gain to
limit battery current and prevent heavy clipping.
The TPA2015D1 has an integrated low-pass filter to
improve the RF rejection and reduce DAC
out-of-band noise, increasing the signal to noise ratio
(SNR).
The TPA2015D1 is available in a space saving
1.954 mm × 1.954 mm, 0.5 mm pitch WCSP package
(YZH).
SIMPLIFIED APPLICATION DIAGRAM
Connected to Supply
2.2 mH
6.8 mF - 22 mF
2.2 mF - 10 mF
Differential
Audio Inputs
Gain Control
AGC Control
Boost Enable
Class-D Enable
VBAT
IN-
SW PVOUT PVDD
IN+
GAIN
AGC
ENB
END
TPA2015D1
GND
OUT+
OUT-
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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.
SpeakerGuard is a trademark of Texas Instruments.
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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 © 2011, Texas Instruments Incorporated