LM4819LDX/NOPB

Audio Amplifiers Overview

The LM4819LDX/NOPB is a single-channel Class-AB audio power amplifier manufactured by Texas Instruments. It delivers 350 mW of output power into a 16-ohm load with 1% Total Harmonic Distortion plus noise. The device operates on a single supply voltage ranging from 2 V to 5.5 V and draws a typical quiescent current of 1.5 mA. It features a shutdown mode for power conservation and is housed in an 8-WSON package.

Audio Amplifiers Feature Summary

• Integrated shutdown mode for effective power management
• Single-supply operation capability
• Class-AB topology for audio fidelity

Audio Amplifiers Applications

• Mobile phone speaker amplification
• Portable media player audio output stages
• Handheld gaming devices

Audio Amplifiers Procurement Notes

Verify the manufacturer designation, as National Semiconductor was acquired by Texas Instruments; parts may bear TI branding. Confirm the suffix 'NOPB' indicates lead-free and RoHS compliance. Ensure the specific package variant matches the design requirements, as pinouts can differ between SOIC and WSON versions.

Audio Amplifiers Selection Notes

Select this component for applications requiring low quiescent current and minimal external components. It is suitable for battery-powered systems where power efficiency is critical. Verify that the required output power does not exceed the thermal limits of the chosen package under maximum operating conditions.

Audio Amplifiers Part Context

This part belongs to the LM4819 family of audio amplifiers designed for portable electronics. It serves as a compact solution for driving small speakers in mobile devices. The series emphasizes ease of implementation with minimal external circuitry requirements.

Audio Amplifiers Replacement Considerations

LM4819MX/NOPB: Pin-compatible alternative in SOIC-8 package.