LM4907LQ/NOPB

Audio Amplifiers Overview

The LM4907LQ/NOPB is a 1-watt audio power amplifier designed for mobile phones and portable communication devices. It delivers 1W continuous average power to an 8Ω BTL load with less than 1% THD+N from a 5VDC supply. Operating voltage ranges from 2.2V to 5.5V. Key specifications include a shutdown current of 0.1µA (typical), PSRR of 62dB at 217Hz, and output power of 390mW at 3.0V. The device features improved pop and click circuitry, requires no output coupling capacitors, and utilizes a space-saving WQFN package.

Audio Amplifiers Feature Summary

• Ultra-low current shutdown mode minimizes power consumption in idle states
• Bridge-tied load (BTL) output configuration drives capacitive loads without external coupling capacitors
• Advanced pop and click circuitry eliminates noise during turn-on and turn-off transitions
• Unity-gain stable design allows flexible external gain configuration

Audio Amplifiers Applications

• Mobile Phones
• PDAs
• Portable Electronic Devices

Audio Amplifiers Procurement Notes

Verify the specific suffix 'LQ' against the official Texas Instruments datasheet SNAS235B to confirm package type and temperature range alignment. Ensure the NOPB designation matches RoHS compliance requirements. Cross-reference ordering information directly with manufacturer documentation to avoid discrepancies in pinout or thermal characteristics.

Audio Amplifiers Selection Notes

Select this component for low-voltage applications requiring high efficiency and minimal external components. The bridge-tied load architecture doubles output swing compared to single-ended designs. Consider the WQFN package for space-constrained PCB layouts. Verify thermal dissipation requirements based on the exposed die attach paddle mounting considerations provided in the datasheet.

Audio Amplifiers Part Context

The LM4907 belongs to Texas Instruments' Boomer audio power amplifier family, engineered for high-quality output with minimal external parts. This series targets mobile and portable devices where low power consumption is critical. The LM4907 specifically addresses the need for 1-watt output in compact form factors without compromising audio fidelity.

Audio Amplifiers Replacement Considerations

Consult the TI product selection guide for direct replacements within the Boomer family. Verify that alternative part numbers maintain compatibility with the 2.2V to 5.5V operating range and WQFN package dimensions.