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LM4755
Stereo 11W Audio Power Amplifier with Mute
LM4755
Stereo 11W Audio Power Amplifier with Mute
General DescriptionThe LM4755isa stereo audio amplifier capableof delivering
11W per channelof continuous average output powertoa loador 7Wper channel into8Ω usinga single 24V supply 10% THD+N. The internal mute circuit and pre-set gain
resistors providefora very economical design solution.
Output power specificationsat both 20V and 24V supplies
and low external component count offer high valueto con-
sumer electronic manufacturersfor stereoTV and compact
stereo applications. The LM4755is specifically designedfor
single supply operation.
Key Specifications Output powerat 10% THD with 1kHz into4Ωat
VCC= 24V: 11W (typ) Output powerat 10% THD with 1kHz into8Ωat
VCC= 24V: 7W (typ) Closed loop gain: 34dB (typ) POat 10% THD+N@ 1kHz into4Ω single-ended
TO-263 packageat VCC=12V: 2.5W (typ) POat 10% THD+N@ 1kHz into8Ω bridged TO-263
packageat VCC=12V: 5W (typ)
Features Drives4Ω and8Ω loads Integrated mute function Internal Gain Resistors Minimal external components needed Single supply operation Internal current limiting and thermal protection Compact 9-lead TO-220 package Wide supply range9V- 40V
Applications Stereos TVs Compact stereos Mini component stereos
Typical Application Connection DiagramsDS100059-1
FIGURE1. Typical Audio Amplifier Application Circuit
Plastic PackageDS100059-2
Package Description
Top View
Order Number LM4755T
Package Number TA09ADS100059-36
Top View
Order Number LM4755TS
Package Number TS9AMay 2002
LM4755
Stereo
Audio
Power
Amplifier
with
Mute
