ISL54003IRTZ

Overview

The ISL54003IRTZ is a Class AB audio amplifier IC designed for single-supply operation. It delivers 1.23W of output power into an 8-ohm load and 215mW into two 16-ohm loads for stereo headphone applications. The device operates within a voltage range of 2.7V to 4.6V, with a typical operating voltage of 3V. It features a maximum quiescent current of 8uA and offers a bandwidth of 1600 MHz. The component includes propagation delay of 0.25 ns at 3V and supports negative signal handling. It is housed in a 20-WFQFN exposed pad package.

Feature Summary

• Class AB architecture optimized for high-fidelity audio reproduction
• Integrated depop circuitry to eliminate speaker pop noise during power transitions
• Built-in thermal protection and shutdown functionality for enhanced reliability
• Supports stereo headphone driving with mono channel configuration

Applications

• Portable MP3 players and digital audio players
• USB 2.0 high-speed peripheral audio interfaces
• Mobile phone earpiece and headset amplification
• Low-voltage consumer electronics requiring compact audio solutions

Procurement Notes

Verify the specific manufacturer status as Intersil assets are now part of Renesas Electronics. Confirm RoHS compliance details through official datasheets. Check for End-of-Life (EOL) notices or obsolescence warnings from authorized distributors. Ensure the 20-TQFN package variant matches your PCB footprint requirements exactly.

Selection Notes

Select this component for designs requiring low-voltage, single-supply audio amplification. It is suitable for battery-powered devices where power efficiency is critical due to its low quiescent current. Consider the 20-WFQFN package size constraints and thermal dissipation needs when choosing between mono and stereo configurations.

Part Context

This part belongs to the Intersil/Renesas audio amplifier family, specifically targeting portable multimedia applications. It complements other switch and mux ICs like the ISL54233 by providing the final stage amplification for audio signals routed through multiplexers in mobile devices.

Replacement Considerations

Check for direct pin-to-pin replacements within the Renesas portfolio. Verify if newer generations offer improved power efficiency or different packaging options while maintaining the same electrical characteristics for legacy designs.