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LM4889 - 1 Watt Audio Power Amplifier

General Description

The LM4889 is an audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications.

It is capable of delivering 1 watt of continuous average power to an 8Ω BTL load with less than 2% distortion (THD+N) from a 5VDC power supply.

Key Features

  • 1.
  • 23 Available in Space-Saving VSSOP, SOIC, WSON, and DSBGA Packages.
  • Ultra Low Current Shutdown Mode (3.3 to 2.6V - 0.01µA).
  • Can Drive Capacitive Loads up to 500 pF.
  • Improved Pop & Click Circuitry Eliminates Noises During Turn-On and Turn-Off Transitions.
  • 2.2 - 5.5V Operation.
  • No Output Coupling Capacitors, Snubber Networks or Bootstrap Capacitors Required.
  • Unity-Gain Stable.
  • External Gain Configuration Capability.

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Other Datasheets by Texas Instruments

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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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LM4889 www.ti.com SNAS157H – APRIL 2002 – REVISED MAY 2013 LM4889 1 Watt Audio Power Amplifier Check for Samples: LM4889 FEATURES 1 •23 Available in Space-Saving VSSOP, SOIC, WSON, and DSBGA Packages • Ultra Low Current Shutdown Mode (3.3 to 2.6V - 0.01µA) • Can Drive Capacitive Loads up to 500 pF • Improved Pop & Click Circuitry Eliminates Noises During Turn-On and Turn-Off Transitions • 2.2 - 5.5V Operation • No Output Coupling Capacitors, Snubber Networks or Bootstrap Capacitors Required • Unity-Gain Stable • External Gain Configuration Capability APPLICATIONS • Mobile Phones • PDAs • Portable Electronic Devices KEY SPECIFICATIONS • Improved PSRR at 217Hz, 5 - 3.3V 75dB • Power Output at 5.0V & 2% THD 1.0W(typ.) • Power Output at 3.3V & 1% THD 400mW(typ.) • Shutdown Current at 3.