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LM48557 - Ceramic Speaker Driver

General Description

The LM48557 is a single supply, mono, ceramic speaker driver with an integrated charge-pump, designed for portable devices, such as cell phones and portable media players, where board space is at a premium.

The LM48557 charge pump allows the device to deliver 5.8VRMS from a single 4.2V supply.

Key Features

  • 1.
  • 23 Integrated Charge Pump.
  • Bridge-Tied Load Output.
  • Differential Input.
  • High PSRR.
  • I2C Volume and Mode Control.
  • Reset Input.
  • Advanced Click-and-Pop Suppression.
  • Low Supply Current.
  • Minimum External Components.
  • Micro-Power Shutdown.
  • Available in Space-Saving 16-Bump DSBGA Package.

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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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LM48557 www.ti.com SNAS486D – JULY 2009 – REVISED MAY 2013 LM48557 Boomer™ Mono, Bridge-Tied Load, Ceramic Speaker Driver with I2C Volume Control and Reset Check for Samples: LM48557 FEATURES 1 •23 Integrated Charge Pump • Bridge-Tied Load Output • Differential Input • High PSRR • I2C Volume and Mode Control • Reset Input • Advanced Click-and-Pop Suppression • Low Supply Current • Minimum External Components • Micro-Power Shutdown • Available in Space-Saving 16-Bump DSBGA Package APPLICATIONS • Mobile Phones • PDAs • Notebook Electronic Devices • MP3 Players DESCRIPTION The LM48557 is a single supply, mono, ceramic speaker driver with an integrated charge-pump, designed for portable devices, such as cell phones and portable media players, where board space is at a premium.