LM4675SD/NOPB

Audio Amplifiers Overview

The LM4675SD/NOPB is a single-channel mono Class-D audio amplifier manufactured by Texas Instruments. It operates within a supply voltage range of 2.4 V to 5.5 V and delivers up to 2.7 W of output power into a 4-ohm load. The device utilizes an 8-WSON (3x3) surface-mount package with exposed pad for thermal management. It supports differential input signals and includes integrated protection features such as short-circuit and thermal shutdown.

Audio Amplifiers Feature Summary

• Class-D switching architecture designed for high energy efficiency in portable applications
• Integrated pop-and-click suppression circuitry to minimize audible noise during power transitions
• Differential input configuration providing improved noise immunity compared to single-ended designs
• Built-in thermal and short-circuit protection mechanisms to ensure operational reliability

Audio Amplifiers Applications

• Portable media players and digital audio assistants
• Mobile phones and smartphones requiring compact audio solutions
• Personal navigation devices and GPS units
• MP3 players and handheld gaming consoles

Audio Amplifiers Procurement Notes

Verify the specific suffix against official documentation, as ordering codes may indicate variations in tape-and-reel quantities or packaging formats rather than functional differences. Confirm that the 8-WSON package dimensions align with your PCB footprint requirements. Ensure compatibility with the intended supply voltage range before finalizing procurement specifications.

Audio Amplifiers Selection Notes

Select this component when system design requires a balance between audio fidelity and battery life conservation. The Class-D topology offers superior efficiency compared to linear amplifiers, reducing heat dissipation in enclosed spaces. Verify that the 2.4 V minimum operating voltage matches the lowest expected battery level in the target application environment.

Audio Amplifiers Part Context

This device belongs to the Texas Instruments Boomer family of audio amplifiers, which focuses on delivering high-quality sound in minimal physical footprints. The LM4675 series specifically targets mobile consumer electronics where space constraints and power efficiency are critical design parameters. It serves as a specialized solution for driving small speakers in battery-operated devices.

Audio Amplifiers Replacement Considerations

The LM4675SDX/NOPB is a confirmed substitute part number representing the same functional device but packaged in tape-and-reel format for automated assembly processes.