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LM380 - 2.5W Audio Power Amplifier

LM380N: NATIONAL SEMICONDUCTOR View Larger Image
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NATIONAL SEMICONDUCTOR
Jameco Part no. 24037
Manufacturer NATIONAL SEMICONDUCTOR
Manufacturer no. LM380N
Catalog 151 , page 10
Pricing & Availability

$1.39

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100+ $0.89
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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.

Features

  • 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
    FamilyLM380
    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
    Amplifier TypeClass-AB
    Maximum Load Resistance8Ohm
    Maximum Power Dissipation8300mW
    Maximum Quiescent Current25mA@18V
    Typical Output Power x Channels @ Load2.5W(Min)x1@8Ohm
    Typical PSRR38dB
    Typical Quiescent Current7mA@18V
    Rail to RailNo
    Specification Value
    Total Harmonic Distortion Noise0.2%@8Ohm
    Minimum Operating Temperature0°C
    Maximum Operating Temperature70°C
    MountingThrough Hole
    PackagingRail
    Pin_Count14
    Product Height3.3mm
    Supplier_PackageMDIP
    Product TypeAudio Amplifier
    Product Width6.35mm
    Product Length19.05mm
    Typical Voltage Gain33.98dB
    Input Signal TypeDifferential
    Output Type1-Channel Mono


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