LM48520TL/NOPB

Audio Amplifiers Overview

The LM48520TL/NOPB is a stereo Class-D audio power amplifier manufactured by Texas Instruments, formerly National Semiconductor. It operates on a single supply voltage ranging from 2.7 V to 5.5 V. The device delivers up to 1.3 W of output power per channel into an 8-ohm load with THD+N less than 1%. Key electrical parameters include a quiescent current of 11.5 mA typical and a shutdown current of 0.04 µA. It features differential inputs and is housed in a 25-pin DSBGA package measuring 2.46 x 2.46 mm.

Audio Amplifiers Feature Summary

• Integrated boost converter for efficient Class-D operation
• Differential input configuration for noise immunity
• Built-in depop circuitry to eliminate pop-and-click noises
• Short-circuit protection and thermal shutdown

Audio Amplifiers Applications

• Portable media players
• Mobile phones
• Personal digital assistants (PDAs)
• MP3 players

Audio Amplifiers Procurement Notes

Verify the manufacturer designation as Texas Instruments, which acquired National Semiconductor. Confirm the specific suffix NOPB indicates lead-free compliance. Ensure the package type matches the 25-DSBGA (2.46x2.46) specification. Check for active status and availability through authorized distributors.

Audio Amplifiers Selection Notes

Select this component for applications requiring high efficiency and small form factor. The integrated boost converter reduces external component count compared to non-boosted Class-D amplifiers. Consider the 2.4V to 5.5V supply range compatibility with single-cell lithium-ion batteries. Evaluate the 25-DSBGA package for PCB space constraints.

Audio Amplifiers Part Context

This part belongs to the LM48520 series of boosted stereo Class-D audio amplifiers. It is designed for battery-powered portable electronics where power efficiency and sound quality are critical. The device replaces older linear amplifiers or discrete Class-D solutions by integrating the boost converter and driver stages.

Audio Amplifiers Replacement Considerations

Direct replacements may include other LM48520 variants with different packaging or suffixes. Verify pin-to-pin compatibility if substituting with similar Class-D amplifiers from Texas Instruments or other manufacturers offering comparable boost-integrated stereo audio amplifiers.