LM4888SQ/NOPB

Audio Amplifiers Overview

The LM4888SQ/NOPB is a stereo audio amplifier IC manufactured by National Semiconductor, now part of Texas Instruments. It features a Class AB output stage designed for high-quality audio reproduction in portable devices. The device integrates a stereo headphone amplifier and supports operation with supply voltages ranging from 2.5V to 5.5V. It delivers up to 3W of continuous average power into a 4Ω load at 5V. The component is housed in a compact 24-lead WQFN package measuring 4x4mm, facilitating space-constrained designs.

Audio Amplifiers Feature Summary

• Integrates dual Class AB amplifiers for stereo audio output
• Includes dedicated stereo headphone amplifier section
• Operates within a wide supply voltage range suitable for battery-powered applications
• Utilizes a small footprint surface-mount package for efficient board layout

Audio Amplifiers Applications

• Portable media players and MP3 devices
• Mobile phones and smartphones
• Personal digital assistants (PDAs)
• Handheld gaming consoles

Audio Amplifiers Procurement Notes

Verify the manufacturer origin, as National Semiconductor assets were acquired by Texas Instruments. Confirm the specific suffix 'NOPB' indicates lead-free and RoHS compliance status according to current datasheets. Ensure the package type matches the required 24-WQFN form factor for your PCB design. Cross-reference ordering information with official Texas Instruments documentation to avoid counterfeit components.

Audio Amplifiers Selection Notes

Select this component when a low-power stereo amplifier with integrated headphone drive is required. It is suitable for applications needing Class AB performance without external output capacitors. Consider the thermal characteristics of the exposed pad WQFN package for heat dissipation. Verify that the supply voltage requirements align with the system's battery or power rail specifications.

Audio Amplifiers Part Context

This component belongs to the LM4888 family of audio amplifiers. It is commonly used in consumer electronics where audio quality and power efficiency are critical. The transition from National Semiconductor to Texas Instruments means technical support and datasheets are now hosted under the TI brand. The NOPB suffix typically denotes environmental compliance.

Audio Amplifiers Replacement Considerations

Check for direct pin-compatible substitutes within the LM4888 series. Verify if newer revisions from Texas Instruments offer improved specifications or packaging options. Ensure any replacement maintains the same Class AB topology and power output capabilities.