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LM4879SD/NOPB |LM4879SDNOPBNSCN/a550avai1.1 Watt Audio Power Amplifier 8-WSON -40 to 85


LM4879SD/NOPB ,1.1 Watt Audio Power Amplifier 8-WSON -40 to 85FEATURES DESCRIPTIONThe LM4879 is an audio power amplifier primarily23• No Output Coupling Capacito ..
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LM4879SD/NOPB
1.1 Watt Audio Power Amplifier 8-WSON -40 to 85
LM4879, LM4879MMBD, LM4879SDBD
www.ti.com
SNAS142G –SEPTEMBER 2001–REVISED MAY 2013
LM4879 1.1 Watt Audio Power Amplifier
Checkfor Samples: LM4879, LM4879MMBD, LM4879SDBD
1FEATURES DESCRIPTION

The LM4879is an audio power amplifier primarily
23• No Output Coupling Capacitors, Snubber
designed for demanding applications in mobileNetworksor Bootstrap Capacitors Required phones and other portable communication device• Unity Gain Stable applications.Itis capableof delivering 1.1 wattof Ultra Low Current Shutdown Mode continuous average powerto an 8Ω BTL load with
less than 1% distortion (THD+N) froma 5VDC power• Fast Turn On: 80ms (typ), 110ms (max) with supply.1.0µF Capacitor
Boomer™ audio power amplifiers were designed• BTL Output Can Drive Capacitive Loads upto specificallyto provide high quality output power witha100pF minimal amount of external components. The• Advanced Pop and Click Circuitry Eliminates LM4879 does not require output coupling capacitorsNoises During Turn-On and Turn-Off or bootstrap capacitors, and thereforeis ideally suitedTransitions for lower-power portable applications where minimal
space and power consumption are primary• 2.2V- 5.0V Operation
requirements.• Availablein Space-Saving DSBGA, WSON, and
VSSOP Packages
The LM4879 featuresa low-power consumption
global shutdown mode, whichis achievedby driving
the shutdown pin with logic low. Additionally, theAPPLICATIONS
LM4879 features an internal thermal shutdown• Mobile Phones protection mechanism. PDAs The LM4879 contains advanced pop and click• Portable electronic devices circuitry which eliminates noises which would
otherwise occur during turn-on and turn-offKEY SPECIFICATIONS transitions. PSRR: 5V, 3Vat 217Hz: 62dB (typ) The LM4879 is unity-gain stable and can be
configuredby external gain-setting resistors.• Power Outputat 5V, 1%THD+N: 1.1W (typ) Power Outputat 3V, 1%THD+N: 350mW (typ) Shutdown Current: 0.1µA (typ)
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