LM4980SD/NOPB

Audio Amplifiers Overview

The LM4980SD/NOPB is a stereo headphone audio amplifier from the Boomer series, designed for portable two-cell battery applications. It operates on a supply voltage range of 1.5V to 3.3V and delivers 42mW per channel into a 16Ω load with less than 1% THD+N at 3.0V. The device features unity-gain stability, micro-power shutdown with 0.1µA typical current, and integrated click-and-pop suppression circuitry. It includes thermal shutdown protection and requires minimal external components.

Audio Amplifiers Feature Summary

• Integrated click and pop suppression circuitry minimizes output transients during power-on and shutdown sequences without requiring costly external components.
• Active low micro-power shutdown mode significantly reduces quiescent current consumption for extended battery life in portable devices.
• Built-in thermal shutdown protection safeguards the device against overheating under fault conditions.

Audio Amplifiers Applications

• Portable two-cell audio products
• Portable MP3 players and recorders
• Portable electronic devices

Audio Amplifiers Procurement Notes

Verify the specific package designation (SON) and manufacturer part number suffix (NOPB) to ensure compliance with RoHS standards and lead-free processing requirements. Confirm that the operating environment remains within the specified temperature range of -40°C to +85°C. Ensure proper PCB layout practices are followed to minimize parasitic impedance and maintain optimal audio performance.

Audio Amplifiers Selection Notes

Select this component for designs requiring high-fidelity stereo audio amplification from single-cell or dual-cell battery sources. It is suitable for driving standard impedance headphones directly. Consider the trade-off between mid-capacitor values and turn-on time when optimizing transient suppression. Verify input coupling capacitor selection based on the target frequency response and available board space.

Audio Amplifiers Part Context

This device belongs to Texas Instruments' Boomer AudioPower Amplifier Series, which focuses on providing high-quality output power in surface-mount packages with minimal external component counts. The LM4980 specifically targets the mobile audio market, offering a compact solution for consumer electronics that prioritize battery efficiency and sound quality.

Audio Amplifiers Replacement Considerations

Consult official documentation for direct pin-compatible alternatives within the same family. Verify electrical characteristics and package dimensions before substituting with other models.