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TPA2025D1_14 Datasheet, PDF (1/29 Pages) Texas Instruments – Constant Output Power Class-D Audio Amplifier | |||
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TPA2025D1
SLOS717B â AUGUST 2011 â REVISED DECEMBER 2014
TPA2025D1 2-W Constant Output Power Class-D Audio Amplifier With Class-G Boost
Converter and Battery Tracking AGC
1 Features
â¢1 Built-In Enhanced Battery Tracking Automatic
Gain Control (AGC)
â Limits Battery Current Consumption
⢠1.9 W into 8-⦠Load from 3.6-V Supply (1%
THD+N)
⢠Integrated Adaptive Boost Converter
â Increases Efficiency at Low Output Power
⢠Low Quiescent Current of 2 mA From 3.6 V
⢠Thermal and Short-Circuit Protection With Auto
Recovery
⢠20-dB Fixed Gain
⢠Similar Performance to TPA2015D1
⢠Available in 1.53-mm à 1.982-mm,
0.5-mm Pitch 12-Ball WCSP Package
2 Applications
⢠Cell Phones
⢠PDA, GPS
⢠Portable Electronics and Speakers
3 Description
The TPA2025D1 is a high efficiency Class-D audio
power amplifier with battery tracking AGC technology
and an integrated Class-G boost converter that
enhances efficiency at low output power. It drives up
to 1.9 W into an 8-Ω speaker (1% THD+N). With 85%
typical efficiency, the TPA2025D1 helps extend
battery life when playing audio.
The built-in boost converter generates a 5.75-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 battery
tracking AGC adjusts the Class-D gain to limit battery
current at lower battery voltage.
The TPA2025D1 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 TPA2025D1 is available in a space saving
1.53 mm à 1.982 mm, 0.5 mm pitch DSBGA package
(YZG).
Device Information(1)
PART NUMBER PACKAGE BODY SIZE (NOM)
TPA2025D1
DSBGA (12) 1.53 mm x 1.982 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
4 Simplified Application Diagram
Connected to Supply
2.2 mH
Battery Tracking Auto Gain Control
2.2 mF
+
Audio
Inpu-t
Enable
AGC
VBAT
IN+
SW PVDD
BGND
IN-
TPA2025D1 OUT+
EN
AGC AGND
OUT-
PGND
6.8 mF - 22 mF
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
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