IS31AP2005-SLS2-TR

Overview

The IS31AP2005-SLS2-TR is a mono Class-D audio power amplifier in an MSOP-8 package. It delivers 2.95W into a 4Ω load and 1.70W into an 8Ω load at 5V supply with 10% THD+N. Operating on a single 2.7V to 5.5V supply, it features a filter-less PWM architecture that eliminates external LC filters. The device includes integrated pop-and-click suppression, short-circuit protection, and thermal shutdown.

Feature Summary

• Filter-less PWM architecture reduces component count and system cost
• Fully differential design minimizes RF rectification and removes bypass capacitor requirement
• Integrated pop-and-click suppression circuitry prevents audible transients
• Externally configurable gain allows independent control from multiple signal sources

Applications

• Wireless or cellular handsets
• Portable DVD players
• Notebook PCs
• USB speakers
• Portable gaming devices

Procurement Notes

Verify the SLS2 suffix confirms the MSOP-8 package variant before ordering. Confirm the TR designation matches the required reel quantity of 2500 units. Ensure the industrial temperature range (-40°C to +85°C) aligns with the target application environment requirements.

Selection Notes

Select this model for applications requiring high efficiency without output filtering components. The fully differential input structure is optimal for noisy environments like cellular handsets. Consider the externally configurable gain feature if summing multiple audio signals such as ringer and voice channels is necessary.

Part Context

This component belongs to Lumissil Microsystems' low-power audio amplifier series. It utilizes a digital switching topology to achieve high efficiency compared to linear amplifiers. The specific part number denotes the MSOP-8 surface-mount package configuration within the product family.

Replacement Considerations

The IS31AP2005-DLS2-TR serves as the direct functional substitute, differing only by the DFN-8 package type. Verify pinout compatibility and thermal dissipation characteristics when transitioning between the MSOP-8 and DFN-8 packages.

FAQ

Does the IS31AP2005 require an output LC filter?

No, the optimized PWM output stage is designed to be filter-less, eliminating the need for external inductors or capacitors.

How is the audio gain configured?

The gain is set externally using input resistors (RIN). A standard configuration uses 150kΩ resistors to achieve a gain of 2V/V.

What protection features are included?

The device integrates short-circuit protection and thermal shutdown to safeguard against overload conditions.