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AK7846 - Stereo Audio Class-D Amp

General Description

THE AK7846 is Stereo Class-D amplifier for driving Piezo-Electric Speakers.

Built-in Boost DCDC converter generates adequate high voltage for driving Piezo Speakers from Li-Ion battery.

AKM state-of-the-art filter-less solution eliminates LC-filters, which are normally required at Class-D outputs.

Key Features

  • Class-D Amplifier ：.
  • Piezo-Electric Speaker Driver.
  • Single-ended analog Input.
  • BTL output.
  • Output voltage = 8Vrms @VDD1=13V.
  • Filter-less solution.
  • Stereo mode.
  • Pop noise suppressor.
  • Output short protection.
  • Boost DCDC Converter ：.
  • Input voltage (Battery) = 2.7V ∼ 4.5V Æ Boosted voltage will be 13V.
  • Over-current protection.
  • Over-voltage protection.
  • Control function ：.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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AKEMDAKEMD CONFIDENTIAL [AK7846] www.DataSheet4U.com Stereo Audio Class-D Amp with Power Booster for Piezo Speakers GENERAL DESCRIPTION THE AK7846 is Stereo Class-D amplifier for driving Piezo-Electric Speakers. Built-in Boost DCDC converter generates adequate high voltage for driving Piezo Speakers from Li-Ion battery. AKM state-of-the-art filter-less solution eliminates LC-filters, which are normally required at Class-D outputs. That contributes to total space saving. Class-D operation ensures higher power efficiency, and couple with Piezo Speaker that is low-power- consumption and low-profile figure. The AK7846 is very applicable for cellular phones with piezo speakers.