IS31LT3505-SLS2-TR

Overview

The IS31LT3505-SLS2-TR is a constant current step-up converter featuring an internal NMOS switch. Designed for LED lighting applications, its boost topology supports the series connection of white LEDs. The component operates within a temperature range of -40°C to +85°C and utilizes a 10-TFSOP or 10-MSOP package with an exposed pad.

Feature Summary

• Integrates an internal NMOS power switch for compact design
• Boost topology enables efficient series LED string driving
• Provides constant current regulation for stable LED performance

Applications

• White LED series string illumination
• General solid-state lighting fixtures
• Commercial LED backlighting modules

Procurement Notes

Verify the specific suffix SLS2-TR against the manufacturer's official datasheet to confirm pinout and thermal pad configuration. Ensure compatibility with your PCB footprint for the 10-TFSOP/10-MSOP exposed pad package. Confirm that the operating voltage requirements align with your LED string load before finalizing procurement.

Selection Notes

Select this component when a monolithic boost solution is required for driving series-connected white LEDs. It is suitable for designs prioritizing board space efficiency due to the integrated MOSFET. Verify that the input voltage range and target LED forward voltage are compatible with the step-up converter capabilities defined in the electrical characteristics table.

Part Context

This part belongs to the Lumissil IS31LT series of high-brightness LED drivers. These devices typically offer integrated power stages to simplify circuit design. The series targets general lighting markets by providing reliable constant current control in small surface-mount packages.

Replacement Considerations

Check for direct cross-reference part numbers from Lumissil or other manufacturers offering identical boost topology and TFSOP-10EP packages. Ensure substitute components match the internal switch current rating and thermal dissipation characteristics.