LM4947TLX/NOPB

Audio Amplifiers Overview

The LM4947TLX/NOPB is a stereo audio power amplifier designed for portable applications. It operates from a single supply voltage ranging from 2.5V to 5.5V. The device delivers 1W of continuous average power into an 8-ohm load with less than 1% total harmonic distortion plus noise at 5V operation. It features integrated output capacitors, eliminating the need for external coupling components in many configurations. The amplifier includes thermal shutdown and short-circuit protection circuits to ensure reliable operation under fault conditions.

Audio Amplifiers Feature Summary

• Integrated output capacitors reduce component count and board space requirements
• Single-supply operation simplifies power management in battery-powered devices
• Built-in thermal shutdown and short-circuit protection enhance system reliability

Audio Amplifiers Applications

• Portable media players
• Mobile phones
• Personal digital assistants

Audio Amplifiers Procurement Notes

Verify the complete part number including suffixes such as NOPB which indicates lead-free and RoHS compliance. Confirm package type TLX corresponds to the specific tape and reel configuration required for automated assembly processes. Check manufacturer documentation for updated environmental declarations and material composition statements prior to procurement.

Audio Amplifiers Selection Notes

Evaluate the required output power against the load impedance and supply voltage constraints. Ensure the application environment stays within the specified operating temperature range to maintain performance specifications. Consider the impact of integrated output capacitors on low-frequency response and transient behavior when designing the audio path.

Audio Amplifiers Part Context

This component belongs to Texas Instruments' line of audio amplifiers optimized for mobile consumer electronics. It addresses the demand for high-quality sound reproduction in space-constrained portable devices. The design focuses on minimizing external passive components while maintaining robust protection features essential for mass-market electronic products.

Audio Amplifiers Replacement Considerations

Consult official substitution guides for compatible alternatives. Verify pin compatibility and electrical specifications match before replacing. Cross-reference with current product lifecycle status to ensure long-term availability.