LM48901SQE/NOPB

Audio Amplifiers Overview

The LM48901SQE/NOPB is a quad Class D audio amplifier IC manufactured by Texas Instruments, originally under the National Semiconductor brand. It delivers 2.8W per channel into a 4-ohm load across four channels. The device operates on a single supply voltage ranging from 2.7V to 5.5V. It utilizes a 32-pin WQFN (5x5mm) package for surface mount installation. The component supports spatial array applications and features low total harmonic distortion plus noise characteristics typical of Class D architectures.

Audio Amplifiers Feature Summary

• Quad-channel Class D architecture for multi-speaker spatial audio arrays
• Single-supply operation compatible with standard battery voltages
• Compact 32-pin WQFN package design for space-constrained PCB layouts

Audio Amplifiers Applications

• Spatial audio systems requiring multi-driver configuration
• Portable multimedia devices with multiple speaker outputs
• Consumer electronics utilizing quad-channel audio processing

Audio Amplifiers Procurement Notes

Verify the manufacturer designation as Texas Instruments, which acquired National Semiconductor. Confirm the specific suffix NOPB indicates lead-free and RoHS compliance status. Ensure the package type matches the 32-WQFN (5x5) specification rather than other variants in the LM48901 series. Cross-reference the datasheet revision to confirm electrical parameters align with current production standards.

Audio Amplifiers Selection Notes

Select this component when a quad-channel solution is required for spatial audio implementations. Compare against mono or stereo amplifiers if fewer channels are sufficient. Consider the 2.8W per channel output power relative to the target load impedance of 4 ohms. Evaluate the 32-pin WQFN footprint against available board space constraints compared to larger packages.

Audio Amplifiers Part Context

This part belongs to the LM48901 series of audio power amplifiers. The series includes variations such as LM48901SQ/NOPB. The product line focuses on high-efficiency Class D amplification for portable and consumer audio applications. The transition from National Semiconductor to Texas Instruments affects branding but maintains technical continuity for existing part numbers.

Audio Amplifiers Replacement Considerations

LM48901SQ/NOPB is a confirmed substitute within the same series offering identical quad-channel Class D functionality.