SLOS717B August   2011  – December 2014 TPA2025D1

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Operating Characteristics
    7. 7.7 Typical Characteristics
  8. 8 Parameter Measurement Information
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Battery Tracking Automatic Gain Control (AGC)
      2. 9.3.2 Boost Converter Auto Pass Through (APT)
      3. 9.3.3 Short Circuit Auto-Recovery
      4. 9.3.4 Thermal Protection
      5. 9.3.5 Operation with DACS and Codecs
    4. 9.4 Device Functional Modes
      1. 9.4.1 Operation Below AGC Threshold
      2. 9.4.2 Shutdown Mode
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
        1. 10.2.2.1 Boost Converter Component Section
          1. 10.2.2.1.1 Inductor Equations
          2. 10.2.2.1.2 Boost Converter Capacitor Selection
          3. 10.2.2.1.3 Boost Terms
        2. 10.2.2.2 Input Capacitors
        3. 10.2.2.3 Speaker Load Limitation
      3. 10.2.3 Application Curve
  11. 11Power Supply Recommendations
    1. 11.1 Power Supply Decoupling Capacitors
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Trademarks
    2. 13.2 Electrostatic Discharge Caution
    3. 13.3 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • 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.

Simplified Application Diagram

app_dia_FP_los717.gif

Battery Tracking Auto Gain Control

Fig11_Output_Voltage_vs_Supply_Voltage_8ohms_los717.png