LM4873MTE/NOPB

Audio Amplifiers Overview

The LM4873MTE/NOPB is a stereo audio amplifier manufactured by Texas Instruments, operating in Class-AB topology. It delivers 2.2 W of output power into a 32 Ohm load with a total harmonic distortion plus noise of 0.3%. The device supports a supply voltage range from 2 V to 5.5 V and functions within an ambient temperature range of -40°C to +85°C. It utilizes a single-ended input configuration and provides differential or single-ended outputs. The component is housed in an HTSSOP-20 package designed for surface-mount installation.

Audio Amplifiers Feature Summary

• Stereo audio amplification capability
• Class-AB operational topology
• Single-ended input interface

Audio Amplifiers Applications

• Portable audio devices
• Consumer electronics systems
• Battery-powered audio equipment

Audio Amplifiers Procurement Notes

Verify the manufacturer designation as Texas Instruments despite historical National Semiconductor branding. Confirm the specific suffix /NOPB indicates lead-free compliance. Ensure the HTSSOP-20 package type matches the target PCB footprint. Validate that the 2.2 W power rating aligns with the intended 32 Ohm load impedance requirements.

Audio Amplifiers Selection Notes

Select this component when a stereo solution is required for low-voltage applications. The Class-AB design offers a balance between efficiency and linearity. Consider the HTSSOP-20 package size for space-constrained layouts. Verify compatibility with the 2 V to 5.5 V supply rails available in the target system architecture.

Audio Amplifiers Part Context

This part belongs to the LM4873 series of audio amplifiers. It represents a transition from National Semiconductor to Texas Instruments product lines. The device serves as a stereo alternative to mono configurations found in other series members. It targets portable markets requiring moderate power output.

Audio Amplifiers Replacement Considerations

LM4873MTEX/NOPB is listed as a related variant.