TPA2080D1_15 Datasheet, PDF (1/21 Pages) Texas Instruments – 2.2 W Constant Output Power Class-D Audio Amplifier with Class-G Boost Converter

YZG
TPA2080D1
www.ti.com
SLOS733A – JANUARY 2012 – REVISED OCTOBER 2012
2.2 W Constant Output Power Class-D Audio Amplifier with
Class-G Boost Converter
Check for Samples: TPA2080D1
FEATURES
1
• 2.2 W into 4 Ω Load from 3.6 V Supply (1%
THD+N)
• Integrated Class-G Boost Converter
– Increases Efficiency at Low Output Power
• Low Quiescent Current of 3.5 mA from 3.6 V
• Thermal and Short-Circuit Protection with
Auto Recovery
• 20 dB Fixed Gain
• Available in 1.53 mm × 1.98 mm, 0.5 mm pitch
12-ball WCSP (DSBGA) Package
APPLICATIONS
• Cell Phones
• PDA, GPS
• Portable Electronics and Speakers
DESCRIPTION
The TPA2080D1 is a high efficiency Class-D audio
power amplifier with an integrated Class-G boost
converter that enhances efficiency at low output
power. It drives up to 2.2 W into an 4 Ω speaker (1%
THD+N). With 85% typical efficiency, the TPA2080D1
helps extend battery life when playing audio.
The built-in boost converter generates a 5.75 V
supply voltage for the Class-D amplifier when high
output power is required. This provides a louder
audio output than a stand-alone amplifier directly
connected to the battery. During low audio output
power periods, the boost converter deactivates and
connects VBAT directly to the Class-D amplifier
supply, PVDD. This improves overall efficiency.
The TPA2080D1 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 TPA2080D1 is available in a space saving
1.53 mm × 1.982 mm, 0.5 mm pitch WCSP package
(YZG).
SIMPLIFIED APPLICATION DIAGRAM
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.
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 © 2012, Texas Instruments Incorporated