IS31BL3506B-TTLS2-TR

Overview

The IS31BL3506B-TTLS2-TR is a boost converter featuring an integrated MOSFET switch designed for driving series strings of LEDs. It operates with a supply voltage range up to 5.5V and supports output currents of 2.2A (switch). The device functions at a switching frequency of 1MHz and offers both analog and PWM dimming capabilities. It is housed in a surface-mount package and rated for operating temperatures between -40°C and +85°C.

Feature Summary

• Integrates a high-current MOSFET switch within a compact boost converter topology
• Supports flexible LED brightness control through combined analog and pulse-width modulation dimming methods

Applications

• LED backlighting systems
• Series LED string drivers

Procurement Notes

Verify the specific suffix TTLS2 against official Lumissil documentation to confirm pinout, thermal pad configuration, and tape-and-reel specifications. Ensure compatibility with existing PCB footprints and reflow profiles before integration into production designs.

Selection Notes

Select this component when a single-channel boost driver with integrated power switching is required for LED applications. Consider the 1MHz frequency for passive component size optimization and verify that the 2.2A switch current rating meets the peak load requirements of the target LED string.

Part Context

This part belongs to the IS31BL3506B series from Lumissil Microsystems, which focuses on efficient LED lighting solutions. The series utilizes a boost topology to step up input voltages for driving higher-voltage LED arrays efficiently.

Replacement Considerations

Cross-reference with IS31BL3506B-STLS2-TR for potential functional equivalence, but verify package and suffix differences carefully.