TPA2025D1 - 2W Constant Output Class-D Audio Amplifier with Adaptive Boost (DC/DC) Converter

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).

• 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