LM4880N

Audio Amplifiers Overview

The LM4880N is a dual-channel Class-AB audio power amplifier manufactured by National Semiconductor, now part of Texas Instruments. Designed for low-voltage consumer applications, it delivers up to 250 mW of output power into an 8-ohm load with a total harmonic distortion plus noise (THD+N) of 0.02%. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V and draws a typical quiescent current of 3.6 mA. It features a shutdown mode for power management and is housed in an 8-pin SOIC package. The operational temperature range spans from -40°C to +85°C, ensuring reliability across various environmental conditions.

Audio Amplifiers Feature Summary

• Dual-channel stereo audio amplification capability
• Low quiescent current consumption for battery efficiency
• Integrated thermal shutdown protection
• Single-supply operation compatibility

Audio Amplifiers Applications

• Portable MP3 players
• Mobile phones
• Personal digital assistants (PDAs)
• Handheld gaming devices

Audio Amplifiers Procurement Notes

Verify the manufacturer designation carefully, as National Semiconductor was acquired by Texas Instruments. Ensure the specific suffix matches your requirements, as packaging and compliance details may vary between legacy NS and current TI designations. Confirm RoHS status and lead-free specifications against the latest datasheet before procurement to ensure regulatory compliance.

Audio Amplifiers Selection Notes

Select this component for applications requiring high sound quality in space-constrained portable devices. The low THD+N specification makes it suitable for high-fidelity audio reproduction. Consider the SOIC-8 package size for PCB layout constraints. Verify that the supply voltage range aligns with your system's battery or power rail characteristics to ensure optimal performance and efficiency.

Audio Amplifiers Part Context

The LM4880 belongs to the LM4880 series of audio amplifiers designed for mobile and portable electronics. This series emphasizes low power consumption and small form factors. The LM4880N specifically denotes the non-plastic-banded version in the SOIC-8 package. It serves as a solution for driving small speakers in devices where power efficiency and audio clarity are critical priorities.

Audio Amplifiers Replacement Considerations

Check for LM4880MX/NOPB or LM4880M/NOPB equivalents from Texas Instruments. These variants offer identical electrical specifications but may differ in packaging format (Reel/Cut Tape vs. Tube). Verify pinout compatibility and thermal characteristics when substituting.