Filterless 2.5w Stereo Class D Audio Power Amplifier - National Semiconductor

The LM4674 is a single supply, high efficiency, 2.5W/ channel, filterless switching Audio Amplifier A low noise PWM architecture eliminates the output Filter reducing ex- ternal component count, board area consumption, system cost, and simplifying design. The LM4674 is designed to meet the demands of mobile phones and other portable Communication devices. Operat- ing from a single 5V supply, the device is capable of deliv- ering 2.5W/channel of continuous output power to a 4 load with less than 10% THD+N. Flexible power supply require- ments allow operation from 2.4V to 5.5V. The LM4674 features high efficiency compared to conven- tional Class AB Amplifiers When driving and 8 speaker from a 3.6V supply, the device features 85% efficiency at PO = 500mW. Four gain options are pin selectable through the GAIN0 and GAIN1 pins. Output short Circuit Protection prevents the device from be- ing damaged during fault conditions. Superior click and pop suppression eliminates audible transients on power-up/down and during shutdown. Independent left/right shutdown con- trols maximizes power savings in mixed mono/stereo appli- cations. By National Semiconductor Corporation
Part Manufacturer Description Datasheet Samples
LM4674SQ/NOPB Texas Instruments Filterless 2.5 Stereo Class D Audio Power Amplifier 16-WQFN -40 to 85
LM4674ATLX/NOPB Texas Instruments Filterless 2.5 Stereo Class D Audio Power Amplifier 16-DSBGA -40 to 85
LM4674TLX/NOPB Texas Instruments Filterless 2.5 Stereo Class D Audio Power Amplifier 16-DSBGA -40 to 85
LM4674ATL/NOPB Texas Instruments Filterless 2.5 Stereo Class D Audio Power Amplifier 16-DSBGA -40 to 85
LM4674 's PackagesLM4674 's pdf datasheet



LM4674 Pinout, Pinouts
LM4674 pinout,Pin out
This is one package pinout of LM4674,If you need more pinouts please download LM4674's pdf datasheet.

LM4674 Application circuits
LM4674 circuits
This is one application circuit of LM4674,If you need more circuits,please download LM4674's pdf datasheet.


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