LM3642TLE/NOPB

LED Driver IC Overview

The LM3642TLE/NOPB is a synchronous boost LED flash driver manufactured by Texas Instruments. It operates within an input voltage range of 2.5 V to 5.5 V and delivers a maximum output current of 1.5 A. The device utilizes a DSBGA-9 package and functions at a switching frequency of 4 MHz. It supports an output voltage up to 5 V and maintains operation between -40°C and +85°C. Key electrical specifications include a maximum supply current of 750 µA.

LED Driver IC Feature Summary

• Integrates a high-side current source for precise LED regulation
• Features I2C control interface for configuration management
• Includes soft start functionality to limit inrush current

LED Driver IC Applications

• Mobile phone camera flash systems
• Smartphone ambient light sensing integration
• Compact portable electronic lighting modules

LED Driver IC Procurement Notes

Verify the specific suffix against official Texas Instruments documentation to confirm pinout and thermal characteristics. Ensure the component matches the required DSBGA-9 footprint and lead-free RoHS compliance standards before integration into the design.

LED Driver IC Selection Notes

Select this component when designing space-constrained mobile devices requiring integrated flash and ambient light sensing capabilities. The synchronous boost topology offers higher efficiency compared to non-synchronous alternatives, making it suitable for battery-powered applications with strict power budget constraints.

LED Driver IC Part Context

This part belongs to the LM3642 series of LED lighting drivers from Texas Instruments. It is designed specifically for mobile handsets and tablets. The device combines a boost converter with an ambient light sensor, reducing the overall bill of materials and board space required for camera flash implementations.

LED Driver IC Replacement Considerations

LM3642TLE-LT/NOPB is documented as a corresponding variant with identical functional descriptions.