LM4929MM/NOPB

Audio Amplifiers Overview

The LM4929MM/NOPB is a stereo Class-AB audio amplifier manufactured by Texas Instruments, designed for low-noise headphone applications. It operates on a single power supply ranging from 2 V to 5.5 V and delivers up to 80 mW of output power per channel into an 16 Ohm load. The device features a single-ended input configuration and provides two output channels in a compact 10-VSSOP package. It supports surface-mount installation and functions within a temperature range of -40°C to +85°C.

Audio Amplifiers Feature Summary

• Stereo Class-AB architecture optimized for low noise performance in headphone amplification
• Integrated shutdown mode and thermal protection mechanisms for system safety
• Single-supply operation capability simplifying power design requirements

Audio Amplifiers Applications

• Portable audio devices requiring stereo headphone amplification
• Low-power consumer electronics with limited supply voltage constraints
• Battery-operated systems utilizing single-supply configurations

Audio Amplifiers Procurement Notes

Verify component authenticity through authorized distribution channels due to the part's discontinued status. Confirm package integrity upon receipt as the 10-VSSOP form factor requires careful handling. Cross-reference datasheet revisions to ensure compatibility with existing designs. Validate RoHS3 compliance documentation for regulatory adherence. Maintain awareness that production availability may be limited or subject to last-time buy conditions.

Audio Amplifiers Selection Notes

Select this component when designing stereo audio paths requiring Class-AB linearity with minimal external filtering. Consider the 2 V to 5.5 V operating range for compatibility with single-cell battery systems. Evaluate the 10-VSSOP package dimensions against PCB space constraints. Ensure the 16 Ohm load impedance matches target speaker specifications for optimal power delivery. Verify thermal management capabilities within the intended operational environment.

Audio Amplifiers Part Context

The LM4929 belongs to Texas Instruments' Boomer series of audio amplifiers, which focuses on efficient, low-component-count solutions for portable audio. This specific variant integrates stereo amplification in a small outline package, targeting mobile phone and handheld device markets. It represents a legacy solution within the broader portfolio of TI audio integrated circuits.

Audio Amplifiers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.