IS31AP2010B-UTLS2-TR

Overview

The IS31AP2010B-UTLS2-TR is a mono filter-less Class-D audio power amplifier manufactured by Lumissil Microsystems. It delivers 3W into a 4Ω load and 1.68W into an 8Ω load at 5.0V with 10% THD+N. The device operates on a single supply voltage ranging from 2.7V to 5.5V and supports an industrial temperature range of -40°C to +85°C. Key electrical characteristics include a quiescent current of 2.6mA at 5.5V, shutdown current below 1μA, and a switching frequency of 250kHz. It utilizes a fully differential architecture to eliminate output LC filters and bypass capacitors.

Feature Summary

• Filter-less PWM architecture eliminates the need for external LC output filters, reducing component count and system cost.
• Fully differential design reduces RF rectification effects and removes the requirement for input coupling or bypass capacitors.
• Integrated click-and-pop suppression circuitry minimizes audible transients during power-up and shutdown sequences.
• Externally configurable gain allows independent control from multiple signal sources via summing capabilities.

Applications

• Wireless cellular handsets
• Portable DVD players
• Notebook PCs
• Portable gaming devices

Procurement Notes

Verify that the specific suffix UTLS2-TR corresponds to the UTQFN-9 package and tape-and-reel quantity as defined in the official ordering information. Confirm RoHS and halogen-free compliance status matches current regulatory requirements for your target market. Ensure the industrial temperature grade (-40°C to +85°C) aligns with your environmental operating specifications before finalizing procurement.

Selection Notes

Select this amplifier for applications requiring high efficiency and minimal external components in space-constrained portable electronics. The fully differential input stage is suitable for noisy environments like GSM handsets to improve noise rejection. Consider the externally adjustable gain and summing inputs if multiple audio sources, such as ringer and voice signals, need to be combined into a single speaker output.

Part Context

This component belongs to the IS31AP2010 series of Class-D audio amplifiers from Lumissil Microsystems. It is designed as a high-efficiency solution for driving speakers in mobile devices without the bulk associated with traditional Class-AB amplifiers or filter-dependent Class-D designs. The UTQFN-9 package provides a compact footprint suitable for modern handheld consumer electronics.

Replacement Considerations

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

FAQ

Does the IS31AP2010B require an output LC filter?

No, the device features a filter-less PWM architecture that eliminates the need for an external LC output filter.

What is the maximum supply voltage for the IS31AP2010B?

The absolute maximum supply voltage rating is 6.0V, but the operational range is specified from 2.7V to 5.5V.

How does the fully differential design benefit RF immunity?

The fully differential design cancels out common-mode noise, such as RF rectification from GSM transmitters, better than typical single-ended audio amplifiers.