LM1876TF

Overview

The LM1876TF is a dual-channel stereo audio power amplifier from the Overture series by Texas Instruments. It delivers 20W of output power into an 8-ohm load with a supply voltage range of 20V to 64V. The device features a gain-bandwidth product of 7.5 MHz and a total harmonic distortion plus noise of 0.08%. It operates in Class-AB topology with analog inputs, drawing 50 mA of quiescent current. The component utilizes a TO-220 package for through-hole mounting and supports an operating temperature range from -20°C to +85°C.

Feature Summary

• Integrated mute and standby modes for flexible system control
• Internal protection mechanisms including thermal shutdown and current limiting
• High slew rate and wide power bandwidth for accurate signal reproduction

Applications

• High-fidelity stereo audio amplification systems
• Professional audio equipment requiring low distortion
• Consumer electronics with integrated sound processing

Procurement Notes

Verify the specific suffix against the manufacturer's latest documentation to confirm pinout compatibility and functional variations. Confirm RoHS compliance status as manufacturing processes may change over time. Ensure the selected variant matches the required thermal management specifications for the intended enclosure design.

Selection Notes

Select this component when a dual-channel solution with built-in mute functionality is required. Compare performance metrics such as THD and power bandwidth against single-channel alternatives like the LM2876 if mono output suffices. Evaluate the thermal requirements of the TO-220 package relative to the expected continuous power dissipation in the target application environment.

Part Context

This part belongs to the LM1876 Overture Audio Power Amplifier Series, designed for high-performance audio applications. It serves as a dual-channel counterpart to single-channel variants within the same family, offering integrated protection features and low distortion characteristics typical of the series.

Replacement Considerations

The LM4766T/NOPB is a documented substitute offering dual-channel amplification with higher power output capabilities.