LM1877M-9/NOPB

Overview

The LM1877M-9/NOPB is a dual-channel Class-AB audio power amplifier manufactured by Texas Instruments. It delivers 1.3W of output power into an 8-ohm load with a supply voltage range of 6V to 24V. The device features a total harmonic distortion plus noise of 0.045% and operates within a temperature range of 0°C to +70°C. Packaged in a 14-pin SOIC surface-mount case, it draws a typical quiescent current of 25mA.

Feature Summary

• Dual-channel stereo audio amplification capability
• Class-AB output stage operation for high fidelity
• Low total harmonic distortion performance

Applications

• Portable audio equipment
• Small speaker systems
• Consumer electronics audio stages

Procurement Notes

Verify the specific suffix '9' against the official datasheet to confirm pinout and electrical characteristics match the design requirements. Ensure the package type is correctly identified as SOIC-14. Confirm RoHS compliance status through the manufacturer's documentation before finalizing procurement.

Selection Notes

Select this component when a dual-channel solution is required for low-to-mid power audio applications. The SOIC-14 package offers a compact footprint suitable for space-constrained designs. Consider the 6V to 24V supply range and thermal management needs for the operating environment.

Part Context

This part belongs to the LM1877 series of audio amplifiers from Texas Instruments. It is designed as a direct replacement for legacy National Semiconductor parts. The device integrates dual amplifiers into a single compact package to reduce board space and simplify circuit design for stereo audio systems.

Replacement Considerations

LM1877MX-9/NOPB is a verified equivalent variant.