LM4819LD/NOPB

Audio Amplifiers Overview

The LM4819LD/NOPB is a 350mW audio power amplifier manufactured by Texas Instruments. It operates as a Class-AB amplifier with differential output and single-channel configuration. The device supports a supply voltage range of 2V to 5.5V and drives an 16 Ohm load. It features a shutdown mode for power management and maintains a total harmonic distortion plus noise of 1%. The component functions within a temperature range of -40°C to +85°C and is housed in a compact 10-WSON package.

Audio Amplifiers Feature Summary

• Integrates a shutdown mode to minimize power consumption during idle periods
• Delivers high-fidelity audio performance through differential output architecture
• Operates efficiently on low-voltage single power supplies

Audio Amplifiers Applications

• Portable digital audio players
• Mobile communication devices
• Personal media players

Audio Amplifiers Procurement Notes

Verify the specific suffix LD against current manufacturer catalogs, as availability may vary. Confirm RoHS compliance status via official documentation before integration. Ensure the 10-WSON package footprint matches the design layout. Cross-reference the datasheet revision date to guarantee parameter accuracy. Validate thermal requirements for the intended operating environment.

Audio Amplifiers Selection Notes

Select this component for applications requiring low-power audio amplification in space-constrained designs. The differential output provides improved noise immunity compared to single-ended alternatives. Consider the shutdown feature for battery-operated systems requiring extended standby times. Verify that the 350mW output capability meets the speaker impedance and volume requirements.

Audio Amplifiers Part Context

This part belongs to the LM4819 family of audio power amplifiers from Texas Instruments. It succeeds earlier National Semiconductor designs under the same model number. The NOPB suffix indicates lead-free construction compliant with environmental standards. The LD package variant offers a smaller form factor suitable for dense PCB layouts.

Audio Amplifiers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided data.