LM48311TLX/NOPB

Audio Amplifiers Overview

The LM48311TLX/NOPB is a mono Class D audio power amplifier manufactured by Texas Instruments. It delivers 2.6W of continuous output power into an 8-ohm load with a 5V supply and less than 0.5% total harmonic distortion plus noise. The device operates on a single voltage supply ranging from 2.7V to 5.5V. It features ultra-low electromagnetic interference (EMI) performance, eliminating the need for external output filters. The amplifier includes integrated E2S (Enhanced Eco-Sound) technology to minimize pop and click noises during power-up and power-down cycles.

Audio Amplifiers Feature Summary

• Ultra-low electromagnetic interference (EMI) design eliminates the requirement for external output filtering components.
• Integrated E2S technology minimizes audible pop and click artifacts during power transitions.
• Filterless architecture reduces overall system component count and board space requirements.

Audio Amplifiers Applications

• Portable multimedia devices requiring high-fidelity audio output
• Mobile phones and smartphones with limited PCB space
• Personal digital assistants (PDAs) and handheld gaming consoles

Audio Amplifiers Procurement Notes

Verify the specific suffix TLX against official Texas Instruments documentation to confirm tape-and-reel packaging specifications. Ensure compatibility with your manufacturing equipment regarding reel dimensions and feed direction. Cross-reference the full part number with the latest datasheet revision history to confirm pinout and electrical characteristics have not changed in recent updates.

Audio Amplifiers Selection Notes

Select this component when designing mono audio systems that require high efficiency and minimal external passive components. It is suitable for applications where EMI compliance is critical without adding bulky filters. Consider the thermal performance under maximum load conditions and ensure the PCB layout supports the required heat dissipation for the VQFN package.

Audio Amplifiers Part Context

This device belongs to the LM4831x family of Class D amplifiers from Texas Instruments. It shares architectural similarities with the LM48310 and LM48312 but is configured specifically for mono channel operation. The family is characterized by its ability to drive speakers directly without output capacitors or inductors, simplifying the design process for consumer electronics manufacturers.

Audio Amplifiers Replacement Considerations

Official substitutes include the LM48310SD/NOPB and LM48312SD/NOPB. Verify pin-to-pin compatibility and electrical parameter alignment before substitution. The LM48310 is a stereo variant, while the LM48312 offers similar mono performance; confirm functional equivalence in your specific circuit topology.