LM4674SQ/NOPB ,Filterless 2.5 Stereo Class D Audio Power Amplifier 16-WQFN -40 to 85features85% efficiency at P = 500mW. Four gain options areO• Mobile Phonespin selectable through th ..
LM4674TL , Filterless 2.5W Stereo Class D Audio Power Amplifier
LM4674TL , Filterless 2.5W Stereo Class D Audio Power Amplifier
LM4674TLX/NOPB ,Filterless 2.5 Stereo Class D Audio Power Amplifier 16-DSBGA -40 to 85FEATURES DESCRIPTIONThe LM4674 is a single supply, high efficiency,2• Output Short Circuit Protecti ..
LM4675SD NOPB ,Ultra-Low EMI, Filterless, 2.65W, Mono, Class D Audio Power Amplifier with Spread Spectrum 8-WSON Electrical CharacteristicsThe following specifications apply for A = 2V/V (R = 150kΩ), R = 15µH + 8 ..
LM4680SD ,10W High-Efficiency Mono BTL Audio Power AmplifierFeaturessuppression circuitry that eliminates noises that would oth-n Soft-start circuitry eliminat ..
LP2966IMMX-2828 ,Dual 150mA Ultra Low-Dropout RegulatorApplications0.9 mV at 1mA load current and 135mV at 150mA loadn Palmtop/Laptop Computercurrent.n GP ..
LP2966IMMX-2830 ,Dual 150mA Ultra Low-Dropout RegulatorapplicationsShutdown Mode: Less than 1μA quiescent current whenn Hand held equipment and multimeter ..
LP2966IMMX-3030 ,Dual 150mA Ultra Low-Dropout RegulatorApplicationsDropout Voltage: Varies linearly with load current. Typicallyn Cellular and Wireless
LP2966IMMX-3325 ,Dual 150mA Ultra Low-Dropout Regulatorapplicationsrequest with minimum orders. In all, 256 voltage combina-n Over temperature/over curren ..
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LM4674SQ/NOPB-LM4674TLX/NOPB
Filterless 2.5 Stereo Class D Audio Power Amplifier
LM4674
www.ti.com SNAS344E –DECEMBER 2005–REVISED APRIL 2013
LM4674 Filterless 2.5W Stereo ClassD Audio Power
Amplifier
Checkfor Samples: LM4674
1FEATURES DESCRIPTIONThe LM4674 isa single supply, high efficiency,
Output Short Circuit Protection 2.5W/channel, filterless switching audio amplifier.A
• Stereo ClassD Operation low noise PWM architecture eliminates the output
No Output Filter Required filter, reducing external component count, board area
consumption, system cost, and simplifying design.
• Logic Selectable Gain Independent Shutdown Control The LM4674is designedto meet the demandsof
mobile phones and other portable communication
• Minimum External Components devices. Operating froma single 5V supply, the
• Click and Pop Suppression device is capable of delivering 2.5W/channel of
Micro-Power Shutdown continuous output powertoa 4Ω load with less than
10% THD+N. Flexible power supply requirements
• Availablein Space-Saving 2mmx 2mmx allow operation from 2.4Vto 5.5V.
0.6mm DSBGA, and 4mmx 4mmx 0.8mm
WQFN Packages The LM4674 features high efficiency comparedto
conventional Class AB amplifiers. When driving an
APPLICATIONS 8Ω speaker froma 3.6V supply, the device features
85% efficiencyat PO= 500mW. Four gain options are
• Mobile Phones pin selectable through the G0 and G1 pins.
• PDAs Output short circuit protection prevents the device
• Laptops from being damaged during fault conditions. Superior
click and pop suppression eliminates audible
KEY SPECIFICATIONS transients on power-up/down and during shutdown.
Independent left/right shutdown control maximizes
• Efficiencyat 3.6V, 100mW into 8Ω: 80% (typ) power savingsin mixed mono/stereo applications.
• Efficiencyat 3.6V, 500mW into 8Ω: 85% (typ) Efficiencyat 5V, 1W into 8Ω: 85% (typ) Quiescent Power Supply Current 3.6V supply: 4mA Power Outputat VDD= 5V, 2.5W (typ) 0.03μA
