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Texas Instruments
LM48511SQ/NOPB
3-W, mono, analog input Class-D audio amp with integrated boost converter 24-WQFN -40 to 85

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Description

:

The LM48511 integrates a boost converter with a high efficiency Class D audio power amplifier to
provide 3W continuous power into an 8Ω speaker when operating from a 5V power supply. When
operating from a 3V to 4V power supply, the LM48511 can be configured to drive 1 to 2.5W into
an 8Ω load with less than 1% distortion (THD+N).

The Class D amplifier features a low noise PWM architecture that eliminates the output filter, reducing external component count, board area consumption, system cost, and simplifying design. A selectable spread spectrum modulation scheme suppresses RF emissions, further reducing the need for output filters.



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