IS31LT3948-GRLS2-TR

Overview

The IS31LT3948-GRLS2-TR is a single-output DC-DC boost LED driver controller designed for driving white LED arrays in large-size LCD panel backlighting applications. It utilizes a PFM step-up converter topology to regulate current efficiently. The device supports PWM dimming with a specified frequency range, allowing for precise brightness control. Packaged in an 8-SOP format, it integrates essential control functions within a compact footprint suitable for space-constrained electronic designs.

Feature Summary

• Integrates a PFM step-up DC-DC converter topology for efficient power conversion
• Supports PWM dimming functionality for adjustable brightness control
• Designed specifically for driving white LED arrays in display backlighting systems

Applications

• Large-size LCD panel backlighting
• White LED array driving circuits
• Display illumination systems

Procurement Notes

Verify the specific ordering suffix and package variant against the manufacturer's official datasheet to ensure compatibility with the target PCB layout and thermal requirements. Confirm that the component meets all relevant regulatory standards required for the end product's market certification before finalizing procurement orders.

Selection Notes

Select this controller when designing high-efficiency backlight solutions for large LCD panels requiring a boost topology. Ensure the external inductor and capacitor values align with the PFM operating parameters defined in the technical documentation to maintain stable output current and optimal dimming performance across the intended operating temperature range.

Part Context

This component belongs to Lumissil Microsystems' portfolio of LED driver controllers, which are engineered for general lighting and display applications. The series offers monolithic and controller-based solutions featuring built-in protections to support extended-life operation in commercial, residential, and automotive markets.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify pinout and electrical specifications carefully if considering alternative components from other manufacturers.