LM48511 Datasheet PDF – Audio Amplifier

Part Number: LM48511

Function: 3-W, Ultra-Low EMI, Filterless, Mono, Class D Audio Power Amplifier

Package: WQFN 24 Pin Type

Manufacturer: Texas Instruments


LM48511 datasheet


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.


1. 3-W Output into 8 Ω at 5 V With THD+N = 1%

2. Selectable spread spectrum mode reduces EMI

3. 80% Efficiency

4. Independent regulator and amplifier shutdown controls

5. Dynamically Selectable Regulator Output Voltages

6. Filterless Class D

7. 3-V to 5.5-V Operation

8. Low shutdown current

9. Click and pop suppression


LM48511 Datasheet PDF Download

LM48511 pdf

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