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LM4731TAN/a1avaiStereo 25W Audio Power Amplifier with Mute and Standby Modes
LM4731TANSN/a164avaiStereo 25W Audio Power Amplifier with Mute and Standby Modes


LM4731TA ,Stereo 25W Audio Power Amplifier with Mute and Standby ModesGeneral Description Key SpecificationsTheLM4731isastereoaudioamplifiercapableofdeliveringj Output P ..
LM4731TA ,Stereo 25W Audio Power Amplifier with Mute and Standby ModesFeaturesTheLM4731hasawideoperatingsupplyrangefrom+/-10Vn Minimal amount of external components nece ..
LM4732TA ,Stereo 50W Audio Power Amplifier with MuteGeneral Description Key SpecificationsThe LM4732 is a stereo audio amplifier capable of typicallyj ..
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LP2975AIMMX-12 ,MOSFET LDO Driver/ControllerBlock Diagram Connection DiagramSurface Mount Mini SO-8 PackageDS100034-2Top ViewFor Order NumbersS ..
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LM4731TA
Stereo 25W Audio Power Amplifier with Mute and Standby Modes
LM4731
Stereo 25W Audio Power Amplifier with Mute and
Standby Modes
General Description

The LM4731isa stereo audio amplifier capableof delivering
typically 25W per channelof continuous average output
power intoa4Ωor8Ω load with less than 10% THD+N from
20Hz- 20kHz.
Each amplifier hasan independent smooth transition fade-
in/out mute anda power conserving standby mode which
canbe controlledby external logic.
The LM4731 has short circuit protection anda thermal shut
down feature thatis activated when the die temperature
exceeds 150˚C. The LM4731 also hasa under voltage lock
out featurefor click and pop free poweroff and on.
The LM4731 hasa wide operating supply range from +/-10V +/-28V allowingfor lower cost unregulated power suppliesbe used.
Key Specifications
Output Power into4Ωor 8Ω, 10% THD+N 25W (typ) THD+Nat 1kHz with2x1W into8Ω 0.02% (typ) Mute Attenuation 85dB (typ) PSRR with fRIPPLE= 120Hz,
VRIPPLE =1VRMS 50dB (typ) Slew Rate 18V/µs (typ) Standby Current (+/-22V) 4.8mA (typ)
Features
Minimal amountof external components necessary Quiet fade-in/out mute mode Low current Standby-mode
Applications
Audio amplifierfor high-end stereo TVs Audio amplifierfor component stereo Audio amplifierfor compact stereo Audio amplifierforPC satellite speaker systems Audio amplifierfor self powered speakers
Connection Diagrams
Plastic Package TO-220 Top Marking (Note 12)

Top View
Non-Isolated Package
Order Number LM4731TA
See NS Package Number TA15A
Top View- Wafer Fab Code- Assembly Plant Code- Date Code- Die Traceability
LM4731TA- LM4731TA
July 2003
LM4731
Stereo
25W
Audio
Power
Amplifier
with
Mute
and
Standby
Modes
ic,good price


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