IS31BL3229-QFLS2-TR

Overview

The IS31BL3229-QFLS2-TR is an LED lighting driver IC manufactured by Lumissil Microsystems. It features eight output channels with a charge pump topology, delivering up to 200 mA per channel. The device operates within a supply voltage range of 2.7 V to 5.5 V and supports a switching frequency of 1 MHz. It utilizes PWM dimming for brightness control and includes short circuit and thermal protection mechanisms. The component is housed in a QFN-20 package and functions within an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrates a charge pump topology to drive multiple LED channels efficiently.
• Supports PWM dimming for precise brightness regulation.
• Includes built-in short circuit and thermal protection for system safety.

Applications

• LED backlighting systems
• General LED illumination circuits
• Portable electronic device lighting

Procurement Notes

Verify the current lifecycle status before procurement, as this component may be marked as obsolete or not recommended for new designs. Confirm availability through authorized distributors, noting that stock levels are limited. Ensure the QFN-20 package footprint matches your PCB design requirements. Check for any product change notifications regarding pinout or electrical specifications prior to finalizing orders.

Selection Notes

Select this driver when eight regulated LED channels are required with integrated charge pump functionality. It is suitable for applications needing 200 mA output capability and PWM dimming control. Consider the QFN-20 package size constraints and the 2.7 V to 5.5 V input voltage range. Evaluate alternatives if higher channel counts or different topologies like buck or boost are necessary for the specific application.

Part Context

This part belongs to the IS31BL series of LED drivers from Lumissil Microsystems. It is distinct from other series such as the IS31FL or IS31CS lines, which offer different channel counts, topologies, or integrated microcontroller capabilities. The IS31BL series focuses on dedicated LED driving with charge pump architectures for compact form factors.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. As the component status is listed as obsolete, consult Lumissil Microsystems directly for potential end-of-life replacement recommendations or updated series equivalents.