LM4876M

Audio Amplifiers Overview

The LM4876M is a single-channel Class-AB audio power amplifier manufactured by Texas Instruments, formerly National Semiconductor. It delivers 1.5 W of output power into an 8 Ohm load with a total harmonic distortion plus noise of 0.25%. The device operates on a single power supply ranging from 2 V to 5.5 V and draws a typical operating current of 6.5 mA. It features analog input and is housed in an SOIC-8 surface-mount package. The component functions within a temperature range of -40°C to +85°C.

Audio Amplifiers Feature Summary

• Single-channel mono audio amplification architecture
• Class-AB output stage topology for signal fidelity
• Low quiescent current consumption design

Audio Amplifiers Applications

• Portable audio devices requiring low power consumption
• Battery-operated consumer electronics
• Small form-factor speaker systems

Audio Amplifiers Procurement Notes

Verify the manufacturer designation as Texas Instruments, which acquired National Semiconductor. Confirm the specific suffix 'M' indicates the SOIC-8 package variant. Ensure the NOPB designation aligns with RoHS compliance requirements if applicable to your assembly process. Cross-reference the datasheet revision date to ensure compatibility with current design specifications.

Audio Amplifiers Selection Notes

Select this component for applications requiring a single-channel solution with moderate power output under low voltage constraints. The SOIC-8 package suits space-constrained printed circuit board layouts. Evaluate the thermal performance within the specified operating temperature range to ensure reliability in enclosed environments without additional heat sinking.

Audio Amplifiers Part Context

This part belongs to the LM4876 series of audio amplifiers. It represents a transition period product where National Semiconductor branding was succeeded by Texas Instruments following corporate acquisition. The device remains a standard solution for basic mono audio amplification tasks in legacy and modern portable designs.

Audio Amplifiers Replacement Considerations

Consult official substitution guides for direct pin-compatible alternatives within the LM4876 family or updated TI equivalents. Verify electrical parameter equivalence for output power and supply voltage ranges before implementation.