IS31LT3353-SDLS4-TR

Overview

The IS31LT3353-SDLS4-TR is a continuous mode inductive step-down converter designed for driving single or multiple series-connected LEDs. It integrates an internal switch and supports analog and PWM dimming. The device operates with a supply voltage range of 6V to 40V and delivers up to 1.2A of switch current. It functions at a switching frequency of 1MHz and utilizes a SOT-89-5 package.

Feature Summary

• Integrates an internal power switch for compact design
• Supports both analog and PWM dimming methods
• Operates as a continuous mode step-down converter

Applications

• General lighting applications
• Commercial lighting systems
• Residential lighting fixtures

Procurement Notes

Verify the specific suffix SDLS4 against the manufacturer's official ordering guide to ensure correct packaging and tape-and-reel specifications. Confirm RoHS compliance status and moisture sensitivity level requirements prior to integration into the production line.

Selection Notes

Select this component when a monolithic solution with an integrated switch is required for high-efficiency LED driving. It is suitable for designs needing flexible dimming control via analog or PWM signals within a 40V input constraint.

Part Context

This part belongs to the Lumissil HBLED driver portfolio, which addresses general lighting markets. The family includes both monolithic solutions with integrated MOSFETs and controller-based options requiring external switches, offering design flexibility for various power levels.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pin compatibility and electrical parameters if considering alternative manufacturers.