LM1876T

Overview

The LM1876T is a dual-channel audio power amplifier from the Overture series, manufactured by National Semiconductor. It delivers 20 watts of total output power, with each channel providing 10 watts RMS. The device integrates mute and standby modes for operational control. It is designed as a monolithic integrated circuit suitable for consumer audio applications requiring high-quality performance.

Feature Summary

• Dual-channel architecture delivering combined 20W output
• Integrated mute and standby functional modes
• Monolithic construction for simplified implementation

Applications

• Computer audio amplifiers
• Consumer audio equipment
• Stereo amplifier circuits

Procurement Notes

Verify the manufacturer origin, as Texas Instruments acquired National Semiconductor. Confirm the specific suffix (e.g., NOPB) matches the required revision level. Ensure the package type aligns with the design constraints. Check for obsolescence status given the acquisition timeline.

Selection Notes

Select this component for stereo applications requiring moderate power output. Compare against single-channel alternatives like the LM1875 if only one channel is needed. Evaluate thermal management requirements based on the 10W per channel specification.

Part Context

This part belongs to the Overture Audio Power Amplifier Series. It shares functional similarities with other devices in the family, such as the LM2876, though power ratings differ. The series focuses on high-performance audio amplification with integrated protection features.

Replacement Considerations

The LM1876TF/NOPB is a confirmed equivalent part number from Texas Instruments. Verify pin compatibility before substitution.