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LM4804 - Low Voltage High Power Audio Power Amplifier

Datasheet Summary

Description

The LM4804 integrates a Boost Converter with an Audio Power Amplifier to drive voice coil speakers in portable applications.

When powered by a 3V supply, it is capable of creating 1.8W power dissipation in an 8Ω bridge-tied-load (BTL) with less than 1% THD+N.

Features

  • 1.
  • 23 Pop & Click Circuitry Eliminates Noise During Turn-On and Turn-Off Transitions.
  • Low, 2μA (Max) Shutdown Current.
  • Low, 11mA (Typ) Quiescent Current (VDD = 4.2V, RL = 8Ω).
  • 1.8W Mono BTL Output, RL = 8Ω, VDD = 3V.
  • Short Circuit Protection.
  • Unity-Gain Stable.
  • External Gain Configuration Capability.

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Datasheet preview – LM4804

Datasheet Details

Part number LM4804
Manufacturer Texas Instruments
File Size 1.00 MB
Description Low Voltage High Power Audio Power Amplifier
Datasheet download datasheet LM4804 Datasheet
Additional preview pages of the LM4804 datasheet.

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Full PDF Text Transcription

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LM4804 www.ti.com SNAS268C – MARCH 2005 – REVISED APRIL 2013 LM4804 Boomer™ Audio Power Amplifier SerieLow Voltage High Power Audio Power Amplifier Check for Samples: LM4804 FEATURES 1 •23 Pop & Click Circuitry Eliminates Noise During Turn-On and Turn-Off Transitions • Low, 2μA (Max) Shutdown Current • Low, 11mA (Typ) Quiescent Current (VDD = 4.2V, RL = 8Ω) • 1.8W Mono BTL Output, RL = 8Ω, VDD = 3V • Short Circuit Protection • Unity-Gain Stable • External Gain Configuration Capability APPLICATIONS • Cellphone • PDA KEY SPECIFICATIONS • Quiescent Power Supply Current (VDD = 4.2V, RL = 8Ω), 11mA (Typ) • BTL Output Power (RL = 8Ω, 2% THD+N, VDD = 3V), 1.
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