IS31FL3742-QFLS4-TR

Overview

The IS31FL3742-QFLS4-TR is a linear LED driver IC designed for dot matrix displays. It features 30 constant current channels with PWM dimming capability up to 38mA per channel. The device operates on a supply voltage range of 2.7V to 5.5V and supports a switching frequency of 1MHz. It is housed in a 48-WFQFN package (6.0mm x 6.0mm) with an exposed pad. The component is rated for an operating temperature range of -40°C to +125°C.

Feature Summary

• Supports 30x6 dot matrix LED configurations
• Provides individual channel PWM dimming control
• Integrates linear constant current regulation without internal switches

Applications

• Dot matrix LED display panels
• Industrial indicator arrays
• Automotive interior lighting matrices

Procurement Notes

Verify the specific suffix QFLS4 to confirm the automotive-grade qualification and tape-and-reel packaging format. Confirm that the 48-QFN footprint matches the target PCB design, as the exposed thermal pad requires specific soldering considerations. Ensure the design accounts for the linear topology's thermal dissipation requirements under maximum load conditions.

Selection Notes

Select this component when a high-channel-count linear driver is required for matrix applications. It is suitable for designs needing independent PWM control per channel within a compact QFN footprint. Consider the 38mA output limit and linear regulation efficiency when determining power budget and heat sinking needs compared to switching alternatives.

Part Context

This part belongs to the Lumissil IS31FL37xx series of LED lighting drivers. These devices are engineered for industrial and automotive applications requiring wide LED support ranges and EMI noise reduction. The IS31FL3742 variant specifically targets dot matrix layouts, offering a balance between channel count and package density for complex display structures.

Replacement Considerations

The IS31FL3742A-QFLS4-TR is listed as a direct replacement or alternative within the product line.