IS31FL3719-TQLS4-TR

Overview

The IS31FL3719-TQLS4-TR is a linear constant current LED driver IC manufactured by Lumissil Microsystems. It features nine independent output channels designed for matrix LED applications. The device supports I2C-compatible programming interfaces for configuration and dimming control. It operates within a supply voltage range of 2.7V to 5.5V and provides an output current of 38mA per channel. The component is housed in a 32-pin eTQFP package with dimensions of 7mm x 7mm. It is rated for an operating temperature range of -40°C to +125°C.

Feature Summary

• Nine independent linear constant current output channels
• I2C compatible digital interface for control and dimming
• Wide operating voltage range supporting 2.7V to 5.5V supplies
• Extended industrial temperature rating from -40°C to +125°C

Applications

• Matrix LED display drivers
• LED lighting systems requiring precise current regulation
• Automotive interior lighting modules

Procurement Notes

Verify the specific suffix TQLS4 to confirm the eTQFP-32 package variant, as other suffixes may indicate different packages like QFN. Confirm RoHS compliance status through official manufacturer documentation or certified datasheets before integration. Ensure the I2C address configuration matches the system design requirements. Check for any recent Product Change Notifications (PCN) that might affect pinout or electrical characteristics.

Selection Notes

Select this component when a high channel count with individual current control is required in a compact form factor. The eTQFP-32 package offers a balance between thermal performance and board space efficiency compared to larger packages. Consider the 38mA output capability against the forward current requirements of the target LEDs. The I2C interface simplifies wiring but requires appropriate pull-up resistors and bus arbitration logic in multi-master systems.

Part Context

This part belongs to the IS31FL37xx series of LED display drivers from Lumissil Microsystems. The series includes variants with different channel counts and package options, such as the IS31FL3719-QFLS4-TR which uses a QFN package instead of the eTQFP found in this model. These drivers are commonly used in applications requiring dense LED matrices where individual pixel control is necessary.

Replacement Considerations

The IS31FL3719-QFLS4-TR is a direct functional substitute with identical electrical specifications but utilizes a QFN-32 package instead of eTQFP-32. Verify footprint compatibility if replacing on existing PCBs. Other series members like the IS31FL3729 offer different channel counts and should be evaluated based on specific application needs rather than assumed interchangeability.