LM4864MM

Audio Amplifiers Overview

The LM4864MM is a mono analog input Class-AB audio power amplifier manufactured by Texas Instruments, formerly National Semiconductor. It operates on a single supply voltage ranging from 2.7 V to 5.5 V and delivers up to 850 mW of output power into an 8-ohm load. The device features a total harmonic distortion plus noise (THD+N) of 0.7% and draws a typical operating current of 3.6 mA. It is housed in an 8-VSSOP surface-mount package and supports an extended industrial temperature range from -40°C to +85°C.

Audio Amplifiers Feature Summary

• Class-AB topology for high-fidelity audio reproduction
• Integrated thermal protection circuitry
• Low quiescent current operation
• Single-supply compatibility

Audio Amplifiers Applications

• Portable media players
• Mobile handsets
• Personal digital assistants
• MP3 players

Audio Amplifiers Procurement Notes

Verify the manufacturer designation carefully, as Texas Instruments acquired National Semiconductor. Confirm the specific suffix indicates lead-free compliance if required by your assembly process. Ensure the ordering part number matches the exact package variant needed for your PCB footprint design.

Audio Amplifiers Selection Notes

Select this component when a compact mono amplifier with low power consumption is required for battery-operated devices. Consider the 8-VSSOP package dimensions for space-constrained layouts. Verify that the 850 mW output capability meets the speaker requirements at the target supply voltage.

Audio Amplifiers Part Context

This component belongs to the Boomer® series of audio amplifiers designed for portable electronics. It provides a balance between sound quality and power efficiency, targeting applications where battery life and physical size are critical constraints for consumer audio devices.

Audio Amplifiers Replacement Considerations

Check for LM4864MMX/NOPB or LM4864MMX-NOPB as potential equivalents. Verify pinout compatibility and electrical specifications before substitution.