BD3873FS-E2

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Audio Special Purpose has a long history of development, and the product of BD3873FS-E2 is one of its representative products. The BD3873FS-E2 is a two-channel high-power audio power amplifier IC, which is mainly used for car audio, audio multi-functional integrated machine applications, etc. In this paper, its application field and working principle will be introduced in detail.

Application Field of BD3873FS-E2

The BD3873FS-E2 is suitable for power amplifier applications, primarily matching car audio and audio multi-functional integrated machine applications, and other related applications. It is usually driven by on-chip N-channel MOSFETs. The BD3873FS-E2 comes with an innovative robust protection circuit that is equipped with a sensing voltage protection and an effective current limiting circuit. The protection circuit is capable of responding quickly in a sudden overload condition.

The BD3873FS-E2 supports up to an output of 80W x2 at maximum when powered by a 14.4V power supply, which is perfect for installing in most car stereos. In addition, the BD3873FS-E2 features built-in thermal detecting circuit and full-bridge drive built-in output power, making it perfect for high-power audio applications.

Working Principle of BD3873FS-E2

The BD3873FS-E2 consists of two integrated power amplifiers in a single IC package, with each power amplifier capable of boosting output power. In order to improve its performance, the output power of the power amplifier is switched between an N-Channel MOSFET as its power output device. This increases the efficiency of the power amplifier.

The unique design of the BD3873FS-E2 enables the two power amplifiers to drive a wide range of audio signal sources, from low to high frequencies. Furthermore, the BD3873FS-E2 incorporates a built-in current limiter that prevents the output signal from becoming too powerful and damaging the audio system. The current limiting function is adjustable according to the desired sound level.

The BD3873FS-E2 also features two DC voltage adjust lines. The power amplifier output is adjusted to the required DC voltage, providing a better bass sound performance. The BD3873FS-E2 also allows the user to adjust the amount of power output and mute function.

In conclusion, the BD3873FS-E2 is a powerful audio power amplifier IC most suitable for car audio and audio multi-functional integrated machine applications. Its built-in protection and control features make it a reliable choice in the harsh environment of car audio systems. The BD3873FS-E2 offers low EMI, high efficiency, and a wide range of audio signals that make it a suitable choice for many high-power audio applications.

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