XPT8871 5W Mono Audio Amplifier IC | SOIC-8 Class AB/D, Low-Noise

The XPT8871 is a high-efficiency 5W mono audio power amplifier IC offered in a compact SOIC-8 package. Designed by XPT, this versatile amplifier supports AB / D switching, delivering excellent sound quality with extremely low distortion and no FM interference, making it ideal for portable audio, DIY speaker projects, toys, small amplifiers, and embedded sound systems.

With a maximum output of 5W at 5V (2Ω load, BTL) and THD <10%, the XPT8871 provides strong, clear audio performance. It features built-in thermal and undervoltage protection, integrated feedback resistors, and requires no output coupling capacitors, no bootstrap capacitors, and no buffer network—greatly simplifying circuit design.

Features / Specifications

• Manufacturer: XPT

• Model: XPT8871

• Package: SOIC-8

• Amplifier Class: AB / D selectable

• Output Power:

  • 5W @ 2Ω load

  • 3.5W @ 3Ω load

  • 3W @ 4Ω load

• Operating Voltage Range: 2.0V – 5.5V

• Distortion: THD+N < 1% (audio range), <10% at max output

• Key Features:

  • No FM interference

  • High efficiency, excellent sound quality

  • External gain adjustable

  • Integrated feedback resistor

  • Very few external components required

  • No output coupling capacitors needed

  • Low leakage current in power-down mode

  • Compatible with LM4871

• Protection: Overtemperature & undervoltage protection

Package Includes:
1 x XPT8871 SOIC-8 5W Mono Audio Amplifier IC

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