LM49370RL

Audio Amplifiers Overview

The LM49370RL is a Boomer audio power amplifier and subsystem featuring an ultra-low EMI spread spectrum Class D loudspeaker amplifier. It is housed in a 49-pin DSBGA (YPG) package. The device operates within a temperature range of -40°C to 85°C. It supports headphone outputs and delivers 1.2W of power. This component is classified as a consumer circuit linear amplifier designed for mono applications.

Audio Amplifiers Feature Summary

• Integrates an ultra-low electromagnetic interference spread spectrum Class D loudspeaker amplifier
• Functions as a combined audio power amplifier and subsystem
• Supports direct connection to headphones

Audio Amplifiers Applications

• Consumer electronic audio circuits
• Mono audio systems requiring integrated amplification
• Headphone output stages

Audio Amplifiers Procurement Notes

Verify the manufacturer origin, as National Semiconductor assets are managed by Texas Instruments. Confirm the specific suffix (NOPB) indicates lead-free compliance if required. Ensure the 49-pin DSBGA footprint matches the design layout. Check current availability status as this may be a legacy part.

Audio Amplifiers Selection Notes

Select this component for designs requiring a compact solution combining a Class D speaker amp with headphone drive capabilities. The ultra-low EMI feature is critical for noise-sensitive environments. Verify that the 1.2W power output meets the load requirements. Consider the 49-pin package size constraints during PCB layout.

Audio Amplifiers Part Context

This part belongs to the LM49370 family from National Semiconductor (now Texas Instruments). Variants include LM49370RLX and evaluation boards like LM49370RLEVAL. The family focuses on integrated audio solutions with spread spectrum technology to minimize radio frequency interference in portable devices.

Audio Amplifiers Replacement Considerations

LM49370RLX/NOPB is a documented variant within the same series. LM49370RL-NOPB is also listed as a comparable item. Verify pinout and thermal characteristics before substituting.