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AK7844 - Stereo Audio Class-D Amp

Datasheet Summary

Description

THE AK7844 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.

Features

  • Class-D Amplifier ：.
  • Piezo-Electric Speaker Driver.
  • Single-ended analog Input.
  • BTL output.
  • Output voltage = 8Vrms @VDD1=8.75V.
  • 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 8.75V.
  • Over-current protection.
  • Over-voltage protection.
  • Control function ：.

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Datasheet preview – AK7844

Datasheet Details

Part number AK7844
Manufacturer Asahi Kasei Microsystems
File Size 457.58 KB
Description Stereo Audio Class-D Amp
Datasheet download datasheet AK7844 Datasheet
Additional preview pages of the AK7844 datasheet.

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Full PDF Text Transcription

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AKEMD AKEMD CONFIDENTIAL [AK7844] www.DataSheet4U.com AK7844 Stereo Audio Class-D Amp with Power Booster for Piezo Speakers GENERAL DESCRIPTION THE AK7844 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-powerconsumption and low-profile figure. The AK7844 is very applicable for cellular phones with piezo speakers.
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