LM4663MTX

Audio Amplifiers Overview

The LM4663MTX is a stereo Class D audio power amplifier manufactured by National Semiconductor, now part of Texas Instruments. It integrates a stereo headphone amplifier within a compact package. The device delivers 2 watts of output power for stereo audio applications. Key electrical characteristics include a switching frequency optimized for audio performance and low total harmonic distortion. The component operates within standard supply voltage ranges suitable for portable electronics. It utilizes a surface-mount package designed for high-density PCB layouts.

Audio Amplifiers Feature Summary

• Integrates stereo Class D audio power amplifier with dedicated headphone driver
• Delivers 2W stereo output power for high-fidelity audio reproduction
• Designed for filterless operation to reduce external component count
• Compact surface-mount packaging suitable for space-constrained mobile devices

Audio Amplifiers Applications

• Portable media players and smartphones
• Tablets and handheld gaming consoles
• Car audio systems and infotainment units
• Bluetooth speakers and wireless audio devices

Audio Amplifiers Procurement Notes

Verify the manufacturer origin as National Semiconductor or Texas Instruments depending on production date. Confirm the suffix MX indicates tape and reel packaging. Ensure RoHS compliance status matches current regulatory requirements. Check for lead-free soldering compatibility if required by assembly processes. Validate pinout configuration against schematic diagrams before integration.

Audio Amplifiers Selection Notes

Select this component when dual-channel audio amplification and headphone driving are required in a single IC. Consider the 2W power rating relative to speaker impedance and supply voltage constraints. Evaluate the thermal performance under maximum load conditions. Compare efficiency metrics against alternative Class D solutions for battery life optimization. Verify package dimensions fit the mechanical enclosure design.

Audio Amplifiers Part Context

The LM4663 series represents National Semiconductor's entry into efficient Class D audio amplification. Following Texas Instruments' acquisition of National Semiconductor, these products transitioned to TI's portfolio. The LM4663MTX variant specifically denotes the tape-and-reel packaging format. This family targets consumer electronics requiring high sound quality with minimal external components.

Audio Amplifiers Replacement Considerations

Check for LM4663MT (tube packaging) if reel availability is an issue. Verify LM4664 or LM4665 for mono configurations if stereo is not needed. Consult Texas Instruments documentation for updated equivalents after the National Semiconductor acquisition.