LM3555TLE/NOPB

LED Driver IC Overview

The LM3555TLE/NOPB is a synchronous boost converter featuring a 500 mA high-side LED driver and dual-mode control interface. It operates within an input voltage range of 2.5 V to 5.5 V, supporting grounded cathode LED configurations via its high-voltage current source. The device utilizes a 12-pin DSBGA (YZR) package and includes overvoltage protection and synchronous rectification for efficient power management in compact designs.

LED Driver IC Feature Summary

• Synchronous boost converter topology with integrated 500 mA high-side LED driver
• Dual-mode control interface supporting I2C dimming capabilities
• High-voltage high-side current source enabling grounded cathode LED operation
• Integrated overvoltage protection and synchronous rectification

LED Driver IC Applications

• Flash LED drivers in mobile devices
• Camera module illumination systems
• Portable electronic lighting applications

LED Driver IC Procurement Notes

Verify the specific suffix (TLE vs TLX) against the manufacturer datasheet to confirm pinout and thermal characteristics. Ensure the design supports the required I2C interface for dual-mode control. Confirm that the DSBGA package footprint matches the PCB layout specifications provided in the official Texas Instruments documentation.

LED Driver IC Selection Notes

Select this component when a compact synchronous boost solution is required for driving high-side LEDs with precise current control. The dual-mode interface allows for flexible system integration. Consider the 12-pin DSBGA package constraints for thermal dissipation and board space availability compared to alternative packages in the LM3555 family.

LED Driver IC Part Context

This part belongs to the LM3555 series of specialized power management ICs designed for LED lighting applications. It integrates the boost converter and driver into a single small form factor, reducing component count. The NOPB suffix indicates compliance with RoHS standards and absence of lead-based materials.

LED Driver IC Replacement Considerations

LM3555TLX/NOPB is a documented variant within the same series. Verify if the package or specific electrical tolerances differ between TLE and TLX suffixes before substitution.