LM4880M/NOPB

Audio Amplifiers Overview

The LM4880M/NOPB is a dual-channel Class-AB audio power amplifier manufactured by Texas Instruments, formerly National Semiconductor. It delivers 250 mW of output power into an 8-ohm load with a total harmonic distortion plus noise of 0.02%. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V and draws a typical operating current of 3.6 mA. It features a shutdown mode for power conservation and has an input offset voltage of 5 mV. The component is housed in an SOIC-8 surface-mount package and functions within a temperature range of -40°C to +85°C.

Audio Amplifiers Feature Summary

• Dual-channel stereo audio amplification capability
• Integrated shutdown mode for power management
• Low total harmonic distortion plus noise performance

Audio Amplifiers Applications

• Portable digital audio players
• Mobile phone speaker systems
• Personal media devices

Audio Amplifiers Procurement Notes

Verify the manufacturer designation as Texas Instruments, which acquired National Semiconductor, when sourcing this component. Confirm the specific suffix 'NOPB' indicates lead-free compliance and RoHS adherence. Ensure the SOIC-8 package type matches the target PCB footprint requirements. Cross-reference the datasheet revision to confirm electrical characteristics remain consistent with the specified parameters.

Audio Amplifiers Selection Notes

Select this amplifier for applications requiring low-power stereo audio output in space-constrained designs. The single-supply operation simplifies power architecture compared to dual-rail solutions. Consider the thermal dissipation capabilities of the SOIC-8 package relative to the expected ambient temperature conditions. Evaluate the 2.7 V minimum supply voltage against the system's battery discharge curve to ensure adequate headroom throughout the operational life.

Audio Amplifiers Part Context

This component belongs to the LM4880 series of audio amplifiers designed for portable electronics. It serves as a successor or alternative to previous National Semiconductor audio products, now produced under Texas Instruments. The series focuses on high efficiency and low quiescent current for battery-operated devices. Related parts in the family may offer variations in channel count or packaging options.

Audio Amplifiers Replacement Considerations

The LM4880MX/NOPB is a verified substitute part number offering identical electrical specifications but available in tape-and-reel packaging instead of tube packaging.