LM1877

Dual Audio Power Amplifier

General Description

The LM1877 is a monolithic dual power amplifier designed to

deliver 2W/channel continuous into 8

Ω loads. The LM1877 is

designed to operate with a low number of external compo-

nents, and still provide flexibility for use in stereo phono-

graphs, tape recorders and AM-FM stereo receivers, etc.

Each power amplifier is biased from a common internal regu-

lator to provide high power supply rejection, and output Q

point centering. The LM1877 is internally compensated for

all gains greater than 10.

Features

n 2W/channel

n −65 dB ripple rejection, output referred

n −65 dB channel separation, output referred

n Wide supply range, 6V–24V

n Very low cross-over distortion

n Low audio band noise

n AC short circuit protected

n Internal thermal shutdown

Applications

n Multi-channel audio systems

n Stereo phonographs

n Tape recorders and players

n AM-FM radio receivers

n Servo amplifiers

n Intercom systems

n Automotive products

Connection Diagram

Dual-In-Line Package

or Surface Mount Package

DS007913-1

Top View

Order Number LM1877M-9 or LM1877N-9

See NS Package Number M14B or N14A

February 1995

© 1999 National Semiconductor Corporation

DS007913

www.national.com