IS31AP2110-ZLS2-TR

Overview

The IS31AP2110-ZLS2-TR is a high-efficiency stereo Class-D audio amplifier manufactured by Lumissil Microsystems. It operates from an 8V to 26V supply voltage and delivers up to 20W per channel into an 8Ω load at 0.2% THD+N, or 40W in parallel BTL mode into a 4Ω load. The device features adjustable power limiting, dynamic temperature control, and output DC detection for speaker protection. It includes a built-in LDO providing a 3.3V analog supply and supports differential inputs with four selectable fixed gain settings.

Feature Summary

• Integrates adjustable power limit function to restrict current flow through the speaker
• Includes dynamic temperature control system that reduces gain when junction temperature exceeds warning levels
• Features output DC detection circuitry to prevent speaker damage from long-term current stress
• Supports parallel BTL mono application configuration

Applications

• TV audio systems
• Bluetooth speaker systems
• Docking speaker systems
• Consumer audio equipment

Procurement Notes

Verify the specific ordering suffix ZLS2-TR against the manufacturer's official documentation to confirm the eTSSOP-28 package type and reel quantity specifications. Ensure compatibility with industrial operating temperature ranges of -40°C to +85°C before finalizing procurement decisions.

Selection Notes

Select this component for applications requiring high efficiency without external heat sinks. Consider the single supply voltage range of 8V to 26V and the internal 3.3V regulator for system design. Evaluate the need for differential inputs and the specific gain settings available via hardware pins.

Part Context

This part belongs to the IS31AP2110 series of Class-D audio amplifiers. It is designed for stereo audio amplification with integrated protection mechanisms. The device utilizes a thermally enhanced eTSSOP-28 package to facilitate efficient heat dissipation during operation.

Replacement Considerations

No public confirmed substitute part numbers are documented in the provided datasheet.

FAQ

How does the dynamic temperature control function operate?

The dynamic temperature control decreases the amplifier gain step-by-step if the junction temperature exceeds a warning level, preventing overheating until the temperature drops below the recovery level.

What is the purpose of the PLIM pin?

The PLIM pin allows users to set a voltage rail lower than half of the 3.3V AVDD to limit the amount of current flowing through the speaker, thereby protecting it from damage.