TPA2025D1_15 Datasheet, PDF (1/29 Pages) Texas Instruments – TPA2025D1 2-W Constant Output Power Class-D Audio Amplifier With Class-G Boost Converter and Battery Tracking AGC

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TPA2025D1
SLOS717B – AUGUST 2011 – REVISED DECEMBER 2014
TPA2025D1 2-W Constant Output Power Class-D Audio Amplifier With Class-G Boost
Converter and Battery Tracking AGC
1 Features
•1 Built-In Enhanced Battery Tracking Automatic
Gain Control (AGC)
– Limits Battery Current Consumption
• 1.9 W into 8-Ω Load from 3.6-V Supply (1%
THD+N)
• Integrated Adaptive Boost Converter
– 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 × 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 × 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.