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Partno	Mfg	Dc	Qty	Available	Descript
LM4991LD/NOPB \|LM4991LDNOPB	NS,NS	N/a	4000	avai	3W Audio Power Amplifier with Shutdown Mode 8-WSON -40 to 85

LM4991LD/NOPB ,3W Audio Power Amplifier with Shutdown Mode 8-WSON -40 to 85features include thermal shutdown• Wireless and Cellular Handsetsprotection, unity-gain stability, ..
LM4991LDX ,3W Audio Power Amplifier with Shutdown ModeElectrical Characteristics V =5V (Notes 2, 3)DDThe following specifications apply for V = 5V and R ..
LM4991MA ,3W Audio Power Amplifier with Shutdown ModeFeaturesBoomer audio power amplifiers are designed specifically ton Available in space-saving LLP a ..
LM4991MAX ,3W Audio Power Amplifier with Shutdown ModeLM4991 3W Audio Power Amplifier with Shutdown ModeMay 2003LM49913W Audio Power Amplifier with Shutd ..
LM4992SD ,420mW Stereo Cell Phone Audio Amplifierfeatures an internal ther-n No output coupling capacitors, snubber networks ormal shutdown protecti ..
LM4992SD/NOPB ,420mW Stereo Cell Phone Audio Amplifier 14-WSON -40 to 85Electrical Characteristics state DC and AC electricalspecifications under particular test condition ..
LP2986IM-3.0 ,Micropower, 200 mA Ultra Low-Dropout Fixed or Adjustable Voltage RegulatorFeaturesn Ultra low dropout voltageThe LP2986 is a 200 mA precision LDO voltage regulatorwhich offe ..
LP2986IM3.3 ,Micropower, 200 mA Ultra Low-Dropout Fixed or Adjustable Voltage RegulatorApplicationsdrops approximately 5% below nominal.n Cellular PhonePrecision Output: The standard pro ..
LP2986IM3.3 ,Micropower, 200 mA Ultra Low-Dropout Fixed or Adjustable Voltage RegulatorFeaturesn Ultra low dropout voltageThe LP2986 is a 200 mA precision LDO voltage regulatorwhich offe ..
LP2986IM-3.3 ,Micropower, 200 mA Ultra Low-Dropout Fixed or Adjustable Voltage RegulatorLP2986 Micropower, 200 mA Ultra Low-Dropout Fixed or Adjustable Voltage RegulatorJanuary 2002LP2986 ..
LP2986IM-3.3 ,Micropower, 200 mA Ultra Low-Dropout Fixed or Adjustable Voltage RegulatorLP2986 Micropower, 200 mA Ultra Low-Dropout Fixed or Adjustable Voltage RegulatorJanuary 2002LP2986 ..
LP2986IM-3.3/NOPB ,Micropower, 200 mA Ultra Low-Dropout Fixed or Adjustable Voltage Regulator 8-SOIC -40 to 125Block Diagram... 1312 Mechanical, Packaging, and Orderable7.3 Feature Description.... 13Information ..

LM4991LD/NOPB
3W Audio Power Amplifier with Shutdown Mode 8-WSON -40 to 85
LM4991
www.ti.com SNAS217A–MAY 2004–REVISED APRIL 2013
LM4991 3W Audio Power Amplifier with Shutdown Mode
Checkfor Samples: LM4991
1FEATURES DESCRIPTION
The LM4991isa mono bridged audio power amplifier Availablein Space-Saving WSON and SOIC capable of delivering 3W of continuous averagePackages power intoa 3Ω load with less than 10% THD when• Ultra Low Current Shutdown Mode poweredbya 5V power supply (see Note below). To Can Drive Capacitive Loads upto 500pF conserve power in portable applications, the
LM4991's micropower shutdown mode (ISD= 0.1µ A,• Improved Click and Pop Circuitry Reduces typ) is activated when VDD is applied to theNoises During Turn-On and Turn-Off SHUTDOWN pin.Transitions
Boomer audio power amplifiers are designed• 2.2- 5.5V Operation specificallyto provide high power, high fidelity audio• No Output Coupling Capacitors, Snubber output. They require few external components andNetworks, Bootstrap Capacitorsor Gain- operate on low supply voltages from 2.2Vto 5.5V.Setting Resistors Required Since the LM4991 does not require output coupling
capacitors, bootstrap capacitors, or snubber• Unity-Gain Stable
networks,itis ideally suited for low-power portable
systems that require minimum volume and weight.APPLICATIONS
Additional LM4991 features include thermal shutdown• Wireless and Cellular Handsets protection, unity-gain stability, and external gain set.• PDAs
Note: An LM4991LD that has been properly mounted• Portable Computers toa circuit board will deliver 3W into 3Ω (at 10%• Desktop Computers THD). The other package options for the LM4991 will
deliver 1.5W into 8Ω (at 10% THD). See theKEY SPECIFICATIONS Application Information sections for further
information concerning the LM4991LD and• Improved PSRRat 217kHz and 1kHz:64 dB LM4991M.(typ) POat VDD= 5.0V, 10% THD, 1kHz LM4991LD (only), 3Ω, 4Ω: 3W (typ), 2.5W
(typ) All packages, 8Ω load: 1.5W (typ) 0.1µA (typ) Top View Figure2. WSON Package

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