LM3642TLX-LT/NOPB

LED Driver IC Overview

The LM3642TLX-LT/NOPB is a synchronous boost LED flash driver manufactured by Texas Instruments. It delivers a peak output current of 1.5 A with a switching frequency of 4 MHz. The device operates on an input voltage range of 2.5 V to 5.5 V and provides a regulated output voltage of 5 V. It features high-side current sensing, input/output isolation, overcurrent protection, and overvoltage protection. The component is housed in a DSBGA-9 package and supports surface mount installation.

LED Driver IC Feature Summary

• Synchronous boost topology for efficient LED driving
• High-side current sensing capability
• Integrated input/output isolation
• Built-in overcurrent and overvoltage protection

LED Driver IC Applications

• Mobile phone camera flash systems
• Smartphone LED lighting drivers
• Portable electronic device illumination

LED Driver IC Procurement Notes

Verify the specific suffix LT against official datasheets to confirm pinout or functional variations relative to standard versions. Ensure compatibility with required thermal management for the DSBGA-9 package. Cross-reference manufacturer documentation for RoHS compliance details and recommended operating conditions before integration into final designs.

LED Driver IC Selection Notes

Select this component when a compact synchronous boost solution is required for high-current LED flashes. The 4 MHz frequency allows for smaller external passive components compared to lower-frequency alternatives. Verify that the 1.5 A output current meets the specific LED array requirements and that the 2.5 V to 5.5 V input range aligns with the system power supply architecture.

LED Driver IC Part Context

This part belongs to the LM3642 series of LED lighting drivers from Texas Instruments. It is designed specifically for portable applications requiring high-brightness LED illumination. The series typically includes variants with different packaging or control interfaces, serving as core components in mobile device camera modules and flashlight circuits.

LED Driver IC Replacement Considerations

LM3642TLE-LT/NOPB

LED Driver IC FAQ

What type of current sensing does the LM3642TLX-LT/NOPB utilize?

It utilizes high-side current sensing for accurate LED current regulation.

Is input/output isolation provided in this driver?

Yes, the device includes input/output isolation as a key feature.