DPA-85U Amplifier

DPA-85U Amplifier

DPA-85U Amplifier

1 Features 3 Description
1 The TPA2025D1 is a high efficiency Class-D audio • Built-In Enhanced Battery Tracking Automatic
power amplifier with battery tracking AGC technology Gain Control (AGC) and an integrated Class-G boost converter that
– Limits Battery Current Consumption enhances efficiency at low output power. It drives up
• 1.9 W into 8-Ω Load from 3.6-V Supply (1% to 1.9 W into an 8-Ω speaker (1% THD+N). With 85%
THD+N) typical efficiency, the TPA2025D1 helps extend
battery life when playing audio. • Integrated Adaptive Boost Converter
– Increases Efficiency at Low Output Power The built-in boost converter generates a 5.75-V
supply voltage for the Class-D amplifier. This • Low Quiescent Current of 2 mA From 3.6 V
provides a louder audio output than a stand-alone
• Thermal and Short-Circuit Protection With Auto amplifier directly connected to the battery. The battery
Recovery tracking AGC adjusts the Class-D gain to limit battery
• 20-dB Fixed Gain current at lower battery voltage.
• Similar Performance to TPA2015D1 The TPA2025D1 has an integrated low-pass filter to
• Available in 1.53-mm × 1.982-mm, improve the RF rejection and reduce DAC out-of0.5-mm Pitch 12-Ball WCSP Package band noise, increasing the signal-to-noise ratio
(SNR).
2 Applications The TPA2025D1 is available in a space saving
1.53 mm × 1.982 mm, 0.5 mm pitch DSBGA package • Cell Phones
(YZG).
• PDA, GPS
• Portable Electronics and Speakers 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.
Battery Tracking Auto Gain Control 4 Simplified Application Diagram
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.
TPA2025D1
SLOS717B –AUGUST 2011–REVISED DECEMBER 2014 www.ti.com
Table of Contents
1 Features………………………………………………………… 1 10.1 Overview ……………………………………………………… 11
2 Applications ………………………………………………….. 1 10.2 Functional Block Diagram ………………………………. 11
10.3 Feature Description……………………………………….. 12 3 Description ……………………………………………………. 1
10.4 Device Functional Modes……………………………….. 13 4 Simplified Application Diagram………………………. 1
11 Application and Implementation…………………… 15 5 Revision History…………………………………………….. 2
11.1 Application Information…………………………………… 15 6 Device Comparison Table………………………………. 3
11.2 Typical Application ………………………………………… 15 7 Pin Configuration and Functions……………………. 3
12 Power Supply Recommendations ………………… 20 8 Specifications………………………………………………… 4
12.1 Power Supply Decoupling Capacitors………………. 20
8.1 Absolute Maximum Ratings ……………………………….. 4
13 Layout…………………………………………………………. 20 8.2 ESD Ratings…………………………………………………….. 4
13.1 Layout Guidelines …………………………………………. 20 8.3 Recommended Operating Conditions………………….. 4
13.2 Layout Example ……………………………………………. 22 8.4 Thermal Information………………………………………….. 4
14 Device and Documentation Support …………….. 23 8.5 Electrical Characteristics……………………………………. 5
14.1 Trademarks ………………………………………………….. 23 8.6 Operating Characteristics…………………………………… 5
14.2 Electrostatic Discharge Caution………………………. 23 8.7 Typical Characteristics ………………………………………. 7
14.3 Glossary ………………………………………………………. 23 9 Parameter Measurement Information ……………. 11
15 Mechanical, Packaging, and Orderable 10 Detailed Description ……………………………………. 11 Information ………………………………………………….. 23
5 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision A (February 2012) to Revision B Page
• Added Pin Configuration and Functions section, ESD Ratings table, Feature Description section, Device Functional
Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device
and Documentation Support section, and Mechanical, Packaging, and Orderable Information section ………………………… 1
Changes from Original (August 2011) to Revision A Page
• Changed Operating quiescent current TYP value from “3.5” to “2.0” for VBAT = 3.6 V; and, TYP value from “4” to
2.5″ for VBAT = 5.2 V…………………………………………………………………………………………………………………………………………. 5
• Changed Shutdown quiescent current MAX value from “3” to “1” ……………………………………………………………………………. 5
• Changed from “110 ms” to “1.6 seconds” in the SHORT CIRCUIT AUTO-RECOVERY description. …………………………… 13
• Changed from “within 200 ms” to “1.6 seconds” in the Speaker Load Limitation description………………………………………. 18