TPA3139D2 - Texas Instruments

TPA3139D2 Inductor Free Class-D Amplifier

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 20mA (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 spac.

Features

• 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 protectio.