LM380 - 2.5W Audio Power Amplifier

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$1.59 ea

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  • Jameco Catalog
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LM380 - 2.5W Audio Power Amplifier

The LM380 is a power audio amplifier for consumer applications. In order to hold system cost to a minimum, gain is internally fixed at 34 dB. A unique input stage allows ground referenced input signals. The output automatically self-centers to one-half the supply voltage.

The output is short circuit proof with internal thermal limiting. The package outline is standard dual-in-line. The LM380N uses a copper lead frame. The center three pins on either side comprise a heat sink. This makes the device easy to use in standard PC layouts.

Uses include simple phonograph amplifiers, intercoms, line drivers, teaching machine outputs, alarms, ultrasonic drivers, TV sound systems, AM-FM radio, small servo drivers, power converters, etc. A selected part for more power on higher supply voltages is available as the LM384.


  • Wide supply voltage range: 10V-22V
  • Low quiescent power drain: 0.13W (VS= 18V)
  • Voltage gain fixed at 50
  • High peak current capability: 1.3A
  • Input referenced to GND
  • High input impedance: 150kΩ
  • Low distortion
  • Quiescent output voltage is at one-half of the supply voltage
  • Standard dual-in-line package

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  • Specification Value
    Supplier PackageMDIP
    Amplifier TypeClass-AB
    Input Signal TypeDifferential
    Output Type1-Channel Mono
    Power Supply TypeSingle
    Minimum Single Supply Voltage10V
    Output Signal TypeSingle
    Typical Single Supply Voltage12V|15V|18V
    Maximum Single Supply Voltage22V
    Maximum Input Bias Current0.1uA(Typ)@18V
    Maximum Load Resistance8Ohm
    Maximum Power Dissipation8300mW
    Maximum Quiescent Current[email protected]
    Typical Output Power x Channels @ Load2.5W(Min)[email protected]
    Typical PSRR38dB
    Typical Quiescent Current[email protected]
    Rail to RailNo
    Total Harmonic Distortion Noise0.2%@8Ohm
    Minimum Operating Temperature0°C
    Maximum Operating Temperature70°C
    MountingThrough Hole
    Product Height3.3mm
    Product TypeAudio Amplifier
    Product Width6.35mm
    Product Length19.05mm
    Typical Voltage Gain33.98dB

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