LM3646BYFQR

LED Driver IC Overview

The LM3646BYFQR is a synchronous boost converter and LED driver IC manufactured by Texas Instruments. It features dual high-side current sources capable of delivering up to 1.5A for flash applications, with a total output current rating of 3A. The device operates within an input voltage range of 2.7V to 5.5V and supports I2C control for dimming and configuration. It utilizes a 20-DSBGA package (2.04x1.78mm) and functions at a switching frequency of 4MHz. The component includes thermal monitoring, overvoltage protection, and input/output isolation.

LED Driver IC Feature Summary

• Dual high-side current sources designed for camera flash applications
• I2C-compatible interface for precise control and dimming
• Integrated thermal monitor and overvoltage protection mechanisms
• Input/output isolation capability during shutdown states

LED Driver IC Applications

• Camera flash lighting systems
• Mobile device illumination drivers
• LED backlight regulation in portable electronics

LED Driver IC Procurement Notes

Verify the obsolete status of this component before integration into new designs. Confirm availability through authorized distributors or check for manufacturer-recommended substitutes. Ensure that the specific suffix 'YFQR' matches the required tape-and-reel packaging format. Validate RoHS compliance and moisture sensitivity levels against project requirements prior to procurement.

LED Driver IC Selection Notes

Select this part for applications requiring high-current flash capabilities with compact footprint constraints. The I2C interface allows for flexible system integration and dynamic brightness adjustment. Consider the 20-DSBGA package size for space-sensitive mobile designs. Evaluate the 4MHz switching frequency for EMI management and passive component selection in the power stage design.

LED Driver IC Part Context

This component belongs to the LM3646 series of LED lighting drivers from Texas Instruments. It is specifically engineered for mobile photography enhancements, providing synchronized boost conversion and regulated current output. The series emphasizes efficiency and thermal management in small form factors suitable for smartphones and tablets.

LED Driver IC Replacement Considerations

Texas Instruments recommends the LM3644YFFR as a substitute part number for this obsolete component. Verify pinout compatibility and electrical specifications when transitioning to the replacement device.