LM4960SQX

Audio Amplifiers Overview

The LM4960SQX is a piezoelectric speaker driver manufactured by Texas Instruments. It integrates a switching regulator and dual audio power amplifiers to drive ceramic speakers with less than 1.0% THD+N on a 3.0V supply. The device delivers 24 VP-P mono BTL output, operates within a 3.0V to 7V input range, and features a fixed 1.6MHz switching frequency. It includes low current shutdown mode, click and pop suppression, thermal protection, and unity-gain stable amplifiers in a 28-pin WQFN package.

Audio Amplifiers Feature Summary

• Integrates a current-mode boost converter operating at a fixed 1.6MHz frequency with dual audio power amplifiers for efficient ceramic speaker driving.
• Features click and pop suppression circuitry and an externally controlled micropower shutdown mode to minimize audible artifacts and reduce power consumption.
• Includes thermal shutdown protection and short circuit protection mechanisms to ensure operational safety under varying load conditions.

Audio Amplifiers Applications

• Mobile phones
• Personal Digital Assistants (PDAs)
• Low voltage portable electronic devices

Audio Amplifiers Procurement Notes

Verify the specific suffix 'SQX' against the manufacturer's official documentation to confirm pinout compatibility and packaging details. Ensure that the ordering information matches the exact part number required for your design specifications. Cross-reference the datasheet revision date to confirm the validity of the electrical characteristics provided.

Audio Amplifiers Selection Notes

Select this component for applications requiring high efficiency in driving piezoelectric loads from low voltage supplies. Consider the external component requirements for the boost converter, including inductance and capacitor selection, to optimize performance. Evaluate the thermal dissipation capabilities of the WQFN package relative to the expected ambient temperature and power levels.

Audio Amplifiers Part Context

The LM4960 belongs to the Boomer audio power amplifier family designed by Texas Instruments. This series focuses on delivering high-quality output power with minimal external components. The integration of the switching regulator allows for direct drive of ceramic speakers without output coupling capacitors, simplifying the overall system design.

Audio Amplifiers Replacement Considerations

Consult the manufacturer's product selection guide for verified substitute part numbers. Ensure any replacement maintains the same package type, pin configuration, and electrical specifications to guarantee functional equivalence in the existing circuit design.