LM3643AYFFR

LED Driver IC Overview

The LM3643AYFFR is a dual-channel LED flash driver IC manufactured by Texas Instruments, designed for mobile camera applications. It features a boost topology with an adjustable output voltage and supports up to 1.5 A output current per channel. The device operates on a supply voltage range of 2.5 V to 5.5 V and utilizes I2C control for configuration. It includes infrared mode capabilities and functions within a temperature range of -40°C to +85°C. The component is housed in a DSBGA-12 package.

LED Driver IC Feature Summary

• Dual-channel architecture supporting independent LED flash outputs
• Integrated boost converter with adjustable output voltage regulation
• I2C interface for precise control and configuration management
• Supports infrared illumination mode for low-light imaging

LED Driver IC Applications

• Mobile phone camera flash systems
• Tablet device lighting modules
• Compact digital camera flash units
• Smartphone auxiliary lighting circuits

LED Driver IC Procurement Notes

Verify the specific suffix 'YFFR' against the manufacturer's official datasheet to confirm package type and tape/reel specifications. Ensure compatibility with I2C bus voltage levels in the target system design. Confirm RoHS compliance status through the latest environmental declaration documents provided by Texas Instruments before final procurement approval.

LED Driver IC Selection Notes

Select this component when dual independent LED channels are required for synchronized or staggered flash operations. The integrated boost converter simplifies power management compared to discrete solutions. Verify that the input voltage range of 2.5 V to 5.5 V aligns with the system battery profile. Consider the DSBGA-12 package size constraints during PCB layout planning for optimal thermal performance.

LED Driver IC Part Context

This part belongs to the LM3643 series of LED drivers from Texas Instruments. It is specifically engineered for high-efficiency flash lighting in portable electronics. The series emphasizes compact form factors and precise current control for consistent image quality across various lighting conditions.

LED Driver IC Replacement Considerations

Consult the official Texas Instruments product selection guide for direct pin-to-pin replacements or functional equivalents within the LM364x family. Verify electrical parameters such as output current limits and operating voltage ranges before substitution.