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
A selected part for more power on higher supply voltages is available as the LM384. For
more information see SNAA086.
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