LM49101TMX/NOPB

Audio Amplifiers Overview

The LM49101TMX/NOPB is a Class AB audio amplifier manufactured by Texas Instruments, formerly National Semiconductor. It features a single-channel (mono) output with stereo headphone capability. The device operates on a supply voltage range of 2.7V to 5.5V and delivers a maximum output power of 1.3W into an 8-ohm load or 45mW into two 32-ohm loads. It utilizes a 25-WFBGA package measuring 2.01x2.01 mm.

Audio Amplifiers Feature Summary

• Integrated I2C interface for digital volume control
• Capacitor-less output design for space efficiency
• Built-in thermal protection and pop suppression

Audio Amplifiers Applications

• Mobile phone audio subsystems
• Portable media players
• Handheld gaming devices

Audio Amplifiers Procurement Notes

Verify the manufacturer origin as Texas Instruments, which acquired National Semiconductor. Confirm the specific suffix 'TMX' indicates tape-and-reel packaging distinct from the standard 'TM' variant. Ensure RoHS compliance matches current REACH standards.

Audio Amplifiers Selection Notes

Select this component for applications requiring a mono amplifier with stereo headphone drive capability in a minimal footprint. The I2C control allows for system-level volume management without additional hardware. Verify that the 2.7V minimum supply voltage aligns with the target battery architecture.

Audio Amplifiers Part Context

This part belongs to the Boomer PowerWise series of audio amplifiers. It represents the transition from National Semiconductor to Texas Instruments product lines. The device is designed for low-power portable electronics where size and battery life are critical constraints.

Audio Amplifiers Replacement Considerations

The LM49101TM/NOPB is a direct pin-compatible alternative. Other variants within the LM49101 family may offer different packaging options such as WQFN.