LM4864MMX ,300 mW Audio Power Amplifier with Shutdown ModeGeneral Description LM4864M & LM4864N,8Ω load 675mW (typ)LM4864MM, 8Ω load (Note 10) 300mW (typ)The ..
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LM4864MMX/NOPB ,300 mW Audio Power Amplifier with Shutdown Mode 8-VSSOP -40 to 85features an externally controlled, low• General purpose audiopower consumption shutdown mode, and t ..
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LP2982AIM5-3.3 ,Micropower 50 mA Ultra Low-Dropout Regulator in SOT-23 and micro SMD PackagesLP2982 Micropower 50 mA Ultra Low-Dropout Regulator in SOT-23and micro SMD PackagesJanuary 2003LP29 ..
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LM4864LD-LM4864M-LM4864MM-LM4864MMX-LM4864MX-LM4864N
300 mW Audio Power Amplifier with Shutdown Mode
LM4864
725mW Audio Power Amplifier with Shutdown Mode
General DescriptionThe LM4864isa bridged audio power amplifier capableof
delivering 725mWof continuous average power intoan8Ω
load with 1% THD+N froma5V power supply.
Boomer® audio power amplifiers were designed specifically provide high quality output power froma low supply volt-
age while requiringa minimal amountof external compo-
nents. Since the LM4864 does not require output coupling
capacitors, bootstrap capacitorsor snubber networks,itis
optimally suitedfor low-power portable applications.
The LM4864 featuresan externally controlled, low power
consumption shutdown mode, and thermal shutdown protec-
tion.
The closed loop responseof the unity-gain stable LM4864
canbe configuredby external gain-setting resistors. The
deviceis availablein multiple package typesto suit various
applications.
Key SpecificationsPOat 1% THD+N with VDD= 5V, 1kHz
LM4864LD,4Ω load 625mW (typ)
LM4864LD,8Ω load 725mW (typ)
LM4864M& LM4864N* ,8Ω load 675mW (typ)
LM4864MM,8Ω load (Note 10) 300mW (typ)
LM4864, 16Ω load 550mW (typ) Shutdown current 0.7µA (typ) Not recommendedfor new designs. Contact NSC Audio
Marketing.
Features MSOP, SOP, DIP*, andLD packaging No output coupling capacitors, bootstrap capacitors,or
snubber circuits are necessary Thermal shutdown protection circuitry Unity-gain stable External gain configuration capability Not recommendedfor new designs. Contact NSC Audio
Marketing.
Applications Cellular phones Personal computers General purpose audio
Typical ApplicationFIGURE1. Typical Audio Amplifier Application Circuit
September 2004
LM4864
725mW
Audio
Power
Amplifier
with
Shutdown
Mode
