LM4866LQ/NOPB

Audio Amplifiers Overview

The LM4866LQ/NOPB is a stereo audio amplifier manufactured by National Semiconductor, now part of Texas Instruments. It delivers 2.2W of output power and operates in Class-AB topology. The device utilizes an LLP-24 package (QCC24) with a thermal slug for heat dissipation. It supports analog inputs and functions within a supply voltage range typical for consumer audio applications. The component is rated for operation between -40°C and +85°C. This specific variant is marked as obsolete in distributor catalogs.

Audio Amplifiers Feature Summary

• Stereo audio amplification capability
• Class-AB operational topology
• Integrated thermal management via exposed pad

Audio Amplifiers Applications

• Portable consumer electronics
• Desktop multimedia systems
• General-purpose audio playback devices

Audio Amplifiers Procurement Notes

Verify current availability status as the LM4866LQ/NOPB is listed as obsolete by major distributors. Confirm pin compatibility and thermal requirements if integrating into existing designs. Check for active replacement series from Texas Instruments to ensure long-term supply chain stability. Validate RoHS compliance documentation against the specific manufacturing date code.

Audio Amplifiers Selection Notes

Select this component only if legacy design compatibility is required or for prototyping obsolete systems. For new designs, consider modern equivalents with improved efficiency or smaller footprints. Ensure the LLP-24 package fits the PCB layout constraints. Verify that the 2.2W output meets the speaker impedance and voltage requirements of the target application without external cooling solutions beyond the standard board copper area.

Audio Amplifiers Part Context

This part belongs to the LM4866 family of stereo audio amplifiers. It shares functional similarities with other variants like LM4866MTEX/NOPB but differs in packaging and specific electrical characteristics. The LLP-24 package distinguishes it from HTSSOP or SOIC versions found in the same product line.

Audio Amplifiers Replacement Considerations

LM4866MTEX/NOPB

Audio Amplifiers FAQ

Is the LM4866LQ/NOPB currently in production?

No, the LM4866LQ/NOPB is listed as obsolete by distributors.

What is the operating temperature range for this amplifier?

The specified operating temperature range is -40°C to +85°C.