IS31AP4991-SLS2-TR

Overview

The IS31AP4991-SLS2-TR is a monolithic Class-AB audio power amplifier manufactured by Lumissil Microsystems in an MSOP-8 package. It delivers 1.2W continuous RMS output power into an 8Ω load at 5V supply voltage. The device features an active-low standby mode that reduces supply current to less than 1μA and includes internal thermal shutdown protection. Electrical characteristics include a quiescent current of 4.8mA maximum, 65dB PSRR at 217Hz, and near-zero click-and-pop performance.

Feature Summary

• Monolithic Class-AB architecture with BTL output configuration for high efficiency
• Active-low standby mode significantly reduces power consumption
• Internal thermal shutdown protection ensures operational safety
• Unity-gain stable design configurable via external gain setting resistors

Applications

• Mobile phones
• Portable electronic devices
• Notebook computers
• PDAs

Procurement Notes

Verify the specific ordering part number IS31AP4991-SLS2-TR against the manufacturer's latest documentation to confirm availability and specifications. Ensure compatibility with the required MSOP-8 surface mount package and industrial temperature range (-40°C to +85°C). Confirm that the lead-free assembly process meets project requirements before finalizing procurement orders.

Selection Notes

Select this component for applications requiring high output power in a compact form factor. The MSOP-8 package offers space savings compared to standard SOP-8 variants. Consider the wake-up time and bypass capacitor requirements when designing the power management circuitry to optimize pop performance and ensure stable operation within the specified voltage range.

Part Context

This device belongs to the IS31AP4991 series of audio amplifiers designed for mobile and portable electronics. The SLS2 suffix indicates the MSOP-8 package variant, distinguishing it from the SOP-8 version (GRLS2). The series is engineered to minimize external component count while maintaining high audio fidelity and low power consumption standards.

Replacement Considerations

IS31AP4991-GRLS2-TR serves as a direct pin-compatible alternative utilizing the SOP-8 package instead of MSOP-8.