LM49155TLX/NOPB

Audio Amplifiers Overview

The LM49155TLX/NOPB is a stereo audio power amplifier designed for portable applications. It utilizes Texas Instruments' PurePath Class H technology to optimize efficiency and output power. The device operates from a single supply voltage ranging from 2.7V to 5.5V. It delivers 1W of continuous average power into an 8-ohm load with less than 1% total harmonic distortion plus noise at 5V operation. The amplifier features integrated short-circuit protection, thermal shutdown, and soft-start capabilities to ensure robust performance in mobile devices.

Audio Amplifiers Feature Summary

• PurePath Class H architecture dynamically adjusts supply voltage to maximize efficiency and audio fidelity
• Integrated short-circuit and thermal protection mechanisms enhance device reliability
• Soft-start functionality minimizes inrush current during power-up sequences

Audio Amplifiers Applications

• Portable media players
• Mobile phones and smartphones
• Personal navigation systems

Audio Amplifiers Procurement Notes

Verify the specific suffix NOPB indicates lead-free compliance when sourcing. Confirm the TLX designation corresponds to the correct tape-and-reel packaging quantity required for your assembly line. Ensure the operating environment remains within the specified temperature range to maintain guaranteed electrical characteristics. Cross-reference the manufacturer's latest datasheet for any updates regarding pin compatibility or recommended operating conditions before finalizing procurement.

Audio Amplifiers Selection Notes

Select this component when high efficiency is critical for battery-operated devices requiring stereo output. It is suitable for designs where space constraints necessitate a compact package solution. Consider this part if the application demands low total harmonic distortion without external filtering components. Evaluate the single-supply requirement against available system voltage rails to ensure adequate headroom for the desired output power levels.

Audio Amplifiers Part Context

This device belongs to Texas Instruments' LM4915x series of audio amplifiers. It is part of the PurePath portfolio, which focuses on optimizing audio quality and power consumption for consumer electronics. The series is engineered specifically for the stringent requirements of mobile platforms, balancing acoustic performance with energy efficiency standards typical of handheld gadgets.

Audio Amplifiers Replacement Considerations

Check for LM49155 variants with different suffixes that may offer identical electrical specifications but distinct packaging options. Verify mechanical footprint compatibility if replacing existing units on a printed circuit board. Ensure that any substitute maintains the same PurePath Class H control interface requirements.