The HT6873 is a 3.5W high-fidelity ultra-low EMI mono filter-free Class D audio power amplifier with anti-clipping distortion. At 5V power supply, 10% THD+N, 4Ω Under load conditions, the 3.5W high power output maintains high efficiency in a variety of audio terminal applications and provides the high-fidelity, low-noise performance of Class AB amplifiers.
    The AROC radiation and conducted interference suppression circuit makes the HT6873 have excellent full bandwidth low radiation performance, and the radiation level is far below the FCC Part15 Class B standard when the output horn line is 20cm long without auxiliary filtering design.
    The HT6873's anti-clipping distortion feature detects and supels output clipping distortion (crackling) caused by excessive amplitude of music, voice signal or drop in battery voltage, significantly improving sound quality, creating a comfortable listening experience, and protecting speakers from overload damage. For different needs, the anti-clipping has two modes, ACF-1 and ACF-2, respectively, the maximum THD+N of about 3% and 10%, while the chip has an ACF-Off mode.
    The HT6873 outputs no filtering network and saves system space and cost with few external components, making it ideal for portable applications.
    In addition, the HT6873 built-in turn-off function minimizes standby current, and also integrates overcurrent protection, overtemperature protection and undervoltage abnormal protection.
    The HT6873 is available in SOP8L, SOP8L-PP, and DFN8L(5mm*6mm) packages.