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LM4878

LM4878 Description

1 Watt Audio Power Amplifier in micro SMD package with Shutdown Logic Low

LM4878 Categories

Audio Power Amplifiers

LM4878 Manufacturer

National Semiconductor

LM4878 Datasheet (PDF)

LM4878 Datasheet

LM4878 Price & Availability


Check LM4878 Price & Availability at Canics

LM4878 Features

  • Internal pulldown resistor on shutdown.
  • micro SMD package (see App. note AN-1112)
  • 5V - 2V operation
  • No output coupling capacitors or bootstrap capacitors.
  • Unity-gain stable
  • External gain configuration capability

LM4878 Description

    The LM4878 is a bridge-connected audio power amplifier capable of delivering 1 W of continuous average power to an 8 load with less than .2% (THD) from a 5V power supply.

    Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. Since the LM4878 does not require output coupling capacitors or bootstrap capacitors. It is optimally suited for low-power portable applications.

    The LM4878 features an externally controlled, low-power consumption shutdown mode, as well as an internal thermal shutdown protection mechanism.

    The unity-gain stable LM4878 can be configured by external gain-setting resistors.

    LM4878 Parameters

    Temperature Min (deg C)-40
    Temperature Max (deg C)85
    SNR (dB)98
    Channels (Channels)1
    PSRR (dB)65
    THD (%).10
    User Supply (Volt)2.60
    Supply Range+2.0 - +5.5 V
    PowerAtFourOhms OnePercentTHD (Watt).55
    PowerAtEightOhms OnePercentTHD (Watt).32
    PowerAtFourOhms TenPercentTHD (Watt).75
    PowerAtEightOhms TenPercentTHD (Watt).43
    THD ConditionsPo=.25 W @Vs=5V, R=8ohms, 20Hz-20kHz
    Select parameters and click to see components with these parameters.

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    Keywords
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