IS31AP4915-QFLS2-TR

Overview

The IS31AP4915-QFLS2-TR is a mono power amplifier with an integrated charge-pump power supply designed to drive high capacitance ceramic loudspeakers. It operates within a supply voltage range of 2.5V to 6.5V and delivers a 20V peak-to-peak voltage swing into piezoelectric speakers. The device features a total harmonic distortion plus noise (THD+N) of 0.01% at 1kHz, a signal-to-noise ratio of 100dB, and a charge pump switching frequency of 320kHz. It is housed in a lead-free 16-pin QFN package measuring 4mm x 4mm and is specified for operation over the -40°C to +85°C temperature range.

Feature Summary

• Integrated charge-pump power supply eliminates the need for external inductors
• Comprehensive click-and-pop suppression circuitry minimizes audible artifacts during startup and shutdown
• Thermal protection safeguards the device against overheating conditions

Applications

• CD/MP3 players
• Smart phones
• Cellular phones
• PDAs
• Handheld gaming devices

Procurement Notes

Verify component authenticity by cross-referencing the manufacturer marking on the package with the official datasheet specifications. Confirm the part number suffix matches the QFN-16 package and industrial temperature range requirements. Ensure the supplier provides traceability documentation consistent with Lumissil Microsystems or Integrated Silicon Solution standards before finalizing acquisition.

Selection Notes

Select this component when driving high-capacitance ceramic or piezoelectric speakers requiring high output voltage swing without inductive components. The integrated charge pump simplifies design by removing inductor constraints. Verify that the application environment stays within the -40°C to +85°C operating range and that the supply voltage remains between 2.5V and 6.5V for optimal performance.

Part Context

This component belongs to the IS31AP4915 series of audio amplifiers manufactured by Lumissil Microsystems (formerly ISSI). It is specifically engineered for portable electronics where space efficiency and battery life are critical. The monolithic integration of the charge pump and amplifier allows for a compact solution suitable for small form-factor handheld devices.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.