LM1877N-9/NOPB

Overview

The LM1877N-9/NOPB is a dual audio power amplifier manufactured by Texas Instruments, belonging to the LM1877 series. It operates in Class-AB topology and delivers 2 W of output power with a total harmonic distortion plus noise of 0.045%. The device supports a supply voltage range from 6 V to 24 V and features a gain of 70 dB. It has an input offset voltage of 15 mV and draws 25 mA of operating current. The component is housed in a SOIC-14 package for surface mount installation and functions within a temperature range of 0°C to +70°C.

Feature Summary

• Dual-channel stereo configuration for simultaneous left and right audio signal amplification
• Class-AB operation providing high-fidelity audio reproduction with low distortion
• Integrated thermal protection circuitry to prevent damage during overload conditions

Applications

• Consumer audio equipment requiring stereo amplification
• Portable audio devices utilizing single-supply architectures
• General-purpose analog audio signal processing circuits

Procurement Notes

Verify the specific suffix 'N' against official Texas Instruments documentation to confirm pinout and package compatibility, as 'N' typically denotes a DIP package while datasheets often reference 'MX' for SOIC. Ensure the ordering part number matches the exact physical footprint required for your PCB design. Confirm RoHS compliance status through the manufacturer's latest product information page before finalizing procurement.

Selection Notes

Select this component when a dual-channel solution is required for low-to-mid power audio applications. The 6 V to 24 V supply range offers flexibility for various battery and linear regulator systems. Consider the SOIC-14 or equivalent package availability if space constraints exist. Evaluate the 25 mA quiescent current against system power budgets for portable designs.

Part Context

This part belongs to the LM1877 family of dual audio power amplifiers from Texas Instruments. It shares functional similarities with other Boomer series amplifiers but is distinct from the single-channel LM1875. The LM1877 series is designed for straightforward implementation with minimal external components, targeting cost-sensitive consumer electronics markets.

Replacement Considerations

LM1877MX-9/NOPB: Verified alternative offering identical electrical specifications in an SOIC-14 surface-mount package.