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LM4905NSN/a10avai1 Watt Audio Power Amplifier
LM4905LDNSN/a2140avai1 Watt Audio Power Amplifier
LM4905LDXNSN/a30322avai1 Watt Audio Power Amplifier
LM4905LQNATIONALN/a3avai1 Watt Audio Power Amplifier
LM4905MMNSN/a171avai1 Watt Audio Power Amplifier


LM4905LDX ,1 Watt Audio Power Amplifierfeatures a low-power consumption shutdownn 2.2 - 5.5V operationmode, which is achieved by driving t ..
LM4905LQ ,1 Watt Audio Power Amplifierfeatures an internal ther-bootstrap capacitors requiredmal shutdown protection mechanism.n Unity-ga ..
LM4905MM ,1 Watt Audio Power AmplifierGeneral Description Key SpecificationsThe LM4905 is an audio power amplifier primarily designedj Im ..
LM4906LD ,1W, Bypass-Capacitor-less Audio Power Amplifier with Internal Selectable Gainapplications.n Minimum external componentsThe LM4906 contains advanced pop and click circuitry that ..
LM4906MM ,1W, Bypass-Capacitor-less Audio Power Amplifier with Internal Selectable GainFeaturesPower Amplifier that does not require an external PSRRbypass capacitor. The LM4906 also has ..
LM4906MMX ,1W, Bypass-Capacitor-less Audio Power Amplifier with Internal Selectable Gainapplications. It is capable ofj Power Output at +3V, THD+N = 1%, 8Ω 390mW (typ)delivering 1W of con ..
LP2985IM5-3.2 ,Micropower 150 mA Low-Noise Ultra Low-Dropout Regulator in SOT-23 and micro SMD PackagesFeaturesn Ultra low dropout voltageThe LP2985 is a 150 mA, fixed-output voltage regulatordesigned t ..
LP2985IM5-3.3 ,Micropower 150 mA Low-Noise Ultra Low-Dropout Regulator in SOT-23 and micro SMD PackagesLP2985 Micropower 150 mA Low-Noise Ultra Low-Dropout Regulator in SOT-23 and micro SMDPackagesMarch ..
LP2985IM5-3.5 ,Micropower 150 mA Low-Noise Ultra Low-Dropout Regulator in SOT-23 and micro SMD PackagesApplicationsuse absolute minimum board space.n Cellular PhonePrecision Output: 1% tolerance output ..
LP2985IM5-3.5 ,Micropower 150 mA Low-Noise Ultra Low-Dropout Regulator in SOT-23 and micro SMD Packagesapplications.n Smallest possible size (SOT-23, micro SMD package)™Using an optimized VIP (Verticall ..
LP2985IM5-3.6 ,Micropower 150 mA Low-Noise Ultra Low-Dropout Regulator in SOT-23 and micro SMD Packagesapplications.n Smallest possible size (SOT-23, micro SMD package)™Using an optimized VIP (Verticall ..
LP2985IM5-3.6/NOPB ,Micropower 150-mA Low-Noise Ultra-Low-Dropout Regulator in SOT-23 and DSBGA Packages 5-SOT-23 -40 to 125Features 3 DescriptionThe LP2985-N low noise linear (LDO) regulator1• Input Voltage Range: 2.5 V to ..


LM4905-LM4905LD-LM4905LDX-LM4905LQ-LM4905MM
1 Watt Audio Power Amplifier
LM4905 Watt Audio Power Amplifier
General Description

The LM4905isan audio power amplifier primarily designed
for demanding applicationsin mobile phones and other por-
table communication device applications.Itis capableof
delivering1 wattof continuous average powertoan8Ω BTL
load with less than 1% distortion (THD+N) froma 5VDC
power supply.
Boomer audio power amplifiers were designed specificallyto
provide high quality output power witha minimal amountof
external components. The LM4905 doesnot require output
coupling capacitorsor bootstrap capacitors, and thereforeis
ideally suitedfor mobile phone and other low voltage appli-
cations where minimal power consumptionisa primaryre-
quirement.
The LM4905 featuresa low-power consumption shutdown
mode, whichis achievedby driving the shutdownpin with
logic low. Additionally,the LM4905 featuresan internal ther-
mal shutdown protection mechanism.
The LM4905 contains advanced pop& click circuitry which
eliminates noise which would otherwise occur during turn-on
and turn-off transitions.
The LM4905is unity-gain stable and canbe configuredby
external gain-setting resistors.
Key Specifications
Improved PSRRat 217Hz& 1KHz 62dB Power Outputat 5.0V, 1% THD,8Ω 1.07W (typ) Power Outputat 3.0V, 1% THD,8Ω 390mW (typ) Shutdown Current 0.1µA (typ)
Features
Availablein space-saving LLP package Ultra low current shutdown mode BTL output can drive capacitive loads Improved pop& click circuitry eliminates noise during
turn-on and turn-off transitions 2.2- 5.5V operation No output coupling capacitors, snubber networksor
bootstrap capacitors required Unity-gain stable External gain configuration capability
Applications
Mobile Phones PDAs Portable electronic devices
Typical Application

200508D3
FIGURE1. Typical Audio Amplifier Application Circuit

July 2003
LM4905
att
Audio
Power
Amplifier
ic,good price


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