Product details

Audio input type Analog Input Architecture Class-D Speaker channels (max) Stereo Rating Catalog Power stage supply (max) (V) 14.4 Power stage supply (min) (V) 3.5 Load (min) (Ω) 3.2 Output power (W) 10 SNR (dB) 102 THD + N at 1 kHz (%) 0.04 Iq (typ) (mA) 20 Control interface Hardware Closed/open loop Closed Analog supply (min) (V) 3.5 Analog supply voltage (max) (V) 14.4 PSRR (dB) 70 Operating temperature range (°C) -10 to 85
Audio input type Analog Input Architecture Class-D Speaker channels (max) Stereo Rating Catalog Power stage supply (max) (V) 14.4 Power stage supply (min) (V) 3.5 Load (min) (Ω) 3.2 Output power (W) 10 SNR (dB) 102 THD + N at 1 kHz (%) 0.04 Iq (typ) (mA) 20 Control interface Hardware Closed/open loop Closed Analog supply (min) (V) 3.5 Analog supply voltage (max) (V) 14.4 PSRR (dB) 70 Operating temperature range (°C) -10 to 85
VQFN (RGE) 24 16 mm² 4 x 4
  • 2 × 3 W into 8-Ω, 1% THD+N, 7.4-V supply
  • 2 × 10 W into 8-Ω, 1% THD+N, 13.5-V supply
  • Fast Turn-on time < 15 ms
  • Wide supply range 3.5-V to 14.4-V
  • Low idle current and small footprint for portable audio applications
    • 4 x 4 mm2 QFN-24 package
    • 20-mA (12-V) idle current with 1SPW modulation
    • > 90% Class-D efficiency
  • Flexible audio solution:
    • MUTE signal for fast enable and enable of outputs
    • Single-ended or differential analog inputs
    • Selectable gain: 20 dB and 26 dB
  • Integrated Protections and Auto Recovery:
    • Pin-to-pin, pin-to-ground, and pin-to-power short circuit protection
    • Thermal protection, undervoltage protection, and overvoltage protection
    • Power limiter and DC speaker protection
  • Spread-spectrum modulation reduces EMI emission
  • Reduced solution size and cost:
    • EN55022 EMC compliant with ferrite bead filters
    • No external heatsink required
  • 2 × 3 W into 8-Ω, 1% THD+N, 7.4-V supply
  • 2 × 10 W into 8-Ω, 1% THD+N, 13.5-V supply
  • Fast Turn-on time < 15 ms
  • Wide supply range 3.5-V to 14.4-V
  • Low idle current and small footprint for portable audio applications
    • 4 x 4 mm2 QFN-24 package
    • 20-mA (12-V) idle current with 1SPW modulation
    • > 90% Class-D efficiency
  • Flexible audio solution:
    • MUTE signal for fast enable and enable of outputs
    • Single-ended or differential analog inputs
    • Selectable gain: 20 dB and 26 dB
  • Integrated Protections and Auto Recovery:
    • Pin-to-pin, pin-to-ground, and pin-to-power short circuit protection
    • Thermal protection, undervoltage protection, and overvoltage protection
    • Power limiter and DC speaker protection
  • Spread-spectrum modulation reduces EMI emission
  • Reduced solution size and cost:
    • EN55022 EMC compliant with ferrite bead filters
    • No external heatsink required

The TPA3139D2 is a 10-W stereo Class-D audio amplifier, featuring a fast turn-on time of <15 ms and mute function. It consumes low idle current of only 20-mA (12-V) and can operate down to 3.5-V, allowing for longer audio playback. Along with a small, 4 x 4 mm2 QFN package, the TPA3139D2 is optimized for 2-cell or 3-cell battery-powered systems with the space constraints. In addition, the Spread Spectrum Control enables the use of inexpensive ferrite bead filters while meeting EMC requirements for system cost reduction.

To further simplify the design, the TPA3139D2 integrates essential protection features including undervoltage, overvoltage, power limit, short circuit, overtemperature, as well as DC speaker protection. All of these protections support automatic recovery.

The TPA3139D2 is a 10-W stereo Class-D audio amplifier, featuring a fast turn-on time of <15 ms and mute function. It consumes low idle current of only 20-mA (12-V) and can operate down to 3.5-V, allowing for longer audio playback. Along with a small, 4 x 4 mm2 QFN package, the TPA3139D2 is optimized for 2-cell or 3-cell battery-powered systems with the space constraints. In addition, the Spread Spectrum Control enables the use of inexpensive ferrite bead filters while meeting EMC requirements for system cost reduction.

To further simplify the design, the TPA3139D2 integrates essential protection features including undervoltage, overvoltage, power limit, short circuit, overtemperature, as well as DC speaker protection. All of these protections support automatic recovery.

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Type Title Date
* Data sheet TPA3139D2 10-W Stereo, 3.5-V to 14.4-V, Low-Idle-Current, Inductor Free Class D Amplifier datasheet (Rev. A) PDF | HTML 24 Jul 2020
EVM User's guide TPA3139D2 Evaluation Module User's Guide 15 Jul 2019

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Evaluation board

TPA3139D2EVM — TPA3139D2 Inductor free 10W stereo (BTL) Class-D audio amplifier evaluation module

The TPA3139D2EVM customer evaluation module demonstrates the TPA3139D2 integrated circuit from Texas Instruments. The TPA3139D2 is a 10-W (per channel) efficient stereo digital amplifier power stage for driving two bridge-tied speakers.
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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 (...)
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VQFN (RGE) 24 View options

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