LM4809MM/NOPB

Audio Amplifiers Overview

The LM4809MM/NOPB is a dual-channel Class-AB audio power amplifier manufactured by Texas Instruments, formerly National Semiconductor. It delivers 105 mW of continuous output power into an 8-ohm load with a supply voltage range of 2.7 V to 5.5 V. The device operates within a temperature range of -40°C to +85°C and features low quiescent current consumption. Packaged in an LLP-8 surface-mount format, it is designed for portable consumer electronics requiring high-quality audio reproduction.

Audio Amplifiers Feature Summary

• Dual-channel mono configuration providing independent left and right audio amplification
• Class-AB topology ensuring high-fidelity signal reproduction with reduced distortion
• Single-supply operation compatible with standard battery voltages

Audio Amplifiers Applications

• Portable media players
• Mobile handsets
• Personal digital assistants

Audio Amplifiers Procurement Notes

Verify the manufacturer designation as Texas Instruments, which acquired National Semiconductor. Confirm the LLP-8 package type matches the specific MM suffix variant. Ensure RoHS compliance documentation aligns with the NOPB suffix requirements for environmental standards.

Audio Amplifiers Selection Notes

Select this component for applications requiring stereo amplification in space-constrained designs. The LLP-8 package offers a compact footprint suitable for dense PCB layouts. Consider the 105 mW output capability relative to the speaker impedance and desired volume levels for the target application.

Audio Amplifiers Part Context

This part belongs to the LM4809 series of audio amplifiers. It serves as a legacy component from the National Semiconductor portfolio, now managed under Texas Instruments. The device is categorized under analog mixed-signal integrated circuits specifically for consumer audio applications.