LM1877M-9

Overview

The LM1877M-9 is a dual-channel Class-AB audio power amplifier manufactured by Texas Instruments. It operates within a supply voltage range of 6 V to 24 V and delivers an output power of 2 W. The device features a total harmonic distortion plus noise (THD+N) of 0.045% and a gain of 70 dB. It utilizes a SOIC-14 surface-mount package and draws a typical operating supply current of 25 mA. The input offset voltage is specified at 15 mV, with an analog input type.

Feature Summary

• Dual-channel stereo audio amplification in a compact surface-mount package
• Class-AB operation for high-fidelity sound reproduction
• Low total harmonic distortion for clear audio output

Applications

• Portable audio equipment
• Home theater systems
• Computer speakers

Procurement Notes

Verify the exact part number suffix against official Texas Instruments documentation to ensure correct pinout and electrical specifications. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Cross-reference datasheet revisions to validate performance parameters before finalizing procurement decisions.

Selection Notes

Select this component when a dual-channel solution is required for low-to-mid power audio applications. Ensure the design accommodates the 6 V to 24 V supply range and SOIC-14 thermal constraints. Compare THD+N and output power specifications against alternative TI Boomer series amplifiers if higher efficiency or different packaging is needed.

Part Context

The LM1877M-9 belongs to the LM1877 family of audio amplifiers from Texas Instruments. This series is designed for general-purpose audio amplification tasks. The 'M' suffix indicates the SOIC-14 plastic small-outline package variant. The '-9' suffix typically denotes specific manufacturing or testing criteria defined by the manufacturer.

Replacement Considerations

LM1877MX-9/NOPB is a documented equivalent variant within the same product family.