2-W, mono, analog input Class-D audio amp with integrated boost, fixed gain & auto. gain control


Product details


Audio input type Analog Input Architecture Class-D Boosted Speaker channels (Max) Mono Power stage supply (Max) (V) 6.4 Power stage supply (Min) (V) 2.5 Load (Min) (ohms) 4 Output power (W) 1.7 SNR (dB) 97 THD + N @ 1 kHz (%) 0.07 Iq (Typ) (mA) 2 Control interface GPIO Closed/open loop Closed Analog supply (Min) (V) 2.5 Analog supply (Max) (V) 5.5 PSRR (dB) 90 Operating temperature range (C) -40 to 85 open-in-new Find other Speaker amps

Package | Pins | Size

DSBGA (YZG) 12 0 mm² 1.57 x 2.022 open-in-new Find other Speaker amps


  • 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
  • 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
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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).

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Technical documentation

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Type Title Date
* Data sheet TPA2025D1 2-W Constant Output Power Class-D Audio Amplifier With Class-G Boost Converter and Battery Tracking AGC datasheet (Rev. B) Dec. 29, 2014
Application note Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) Aug. 26, 2019
Application note AN-1849 An Audio Amplifier Power Supply Design (Rev. C) Jun. 27, 2019
Application note AN-1737 Managing EMI in Class D Audio Applications (Rev. A) May 01, 2013
User guide TPA2025D1 Audio Power Amplifier Evaluation Module Sep. 22, 2011

Design & development

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Hardware development

document-generic User guide

The TPA2025D1 is a mono 2.0-W Class-D audio amplifier with an integrated boost converter. The evaluation module comprises a TPA2025D1, a small number of external components, and input and output connectors to simplify interface to an audio source and speaker. The EVM features jumpers to easily (...)

  • High Efficiency Integrated Boost Converter
  • 2.0 W into 8Ω at 3.6 V (6% THD)
  • Constant output power of 2.0 W (3.6-5.0 V)
  • 2.3 V to 5.2 V supply voltage
  • Battery Tracking AGC
  • Battery Tracking SpeakerGuard™
  • Very High PSRR – 90 dB
  • High efficiency (81%) (@1 W and 3.6 V)
  • Ultra-low quiescent current (1.7 mA)
  • Integrated (...)

Design tools & simulation

SLOM258A.ZIP (55 KB) - PSpice Model
SLOM259A.ZIP (59 KB) - TINA-TI Spice Model
SLOM260A.TSC (723 KB) - TINA-TI Reference Design
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

CAD/CAE symbols

Package Pins Download
DSBGA (YZG) 12 View options

Ordering & quality

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