LM380
www.ti.com SNAS546C – DECEMBER 1994 – REVISED APRIL 2013 LM380 2.5W Audio Power Amplifier
Check for Samples: LM380 FEATURES DESCRIPTION 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. 1 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 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, …
