LM3644YFFR

LED Driver IC Overview

The LM3644YFFR is a dual-channel LED lighting driver IC from Texas Instruments, designed for camera flash applications. It features a boost topology with two outputs capable of delivering up to 1.5 A per channel. The device operates on an input voltage range of 2.5 V to 5.5 V and supports adjustable output voltages. It includes I2C control and IR mode capabilities. The component functions within a temperature range of -40°C to +85°C and is housed in a DSBGA-12 package.

LED Driver IC Feature Summary

• Dual-channel current source architecture optimized for camera flash LED driving
• Integrated I2C interface for precise digital control and configuration
• Supports infrared (IR) mode operation for specialized sensing applications

LED Driver IC Applications

• Smartphone camera flash systems
• Mobile device illumination modules
• Compact imaging sensor lighting

LED Driver IC Procurement Notes

Verify the specific suffix YFFR against the manufacturer's latest datasheet to confirm package type and tape-and-reel specifications. Ensure compatibility with system voltage requirements and thermal management constraints before integration. Cross-reference ordering information with official distributor catalogs to validate current production status and availability channels.

LED Driver IC Selection Notes

Select this component when designing compact mobile devices requiring dual independent LED control. The integrated boost converter simplifies power supply design by eliminating external inductors where possible. Consider the small DSBGA-12 footprint for space-constrained PCB layouts. Verify that the I2C address and control logic align with the host processor's communication interface.

LED Driver IC Part Context

This part belongs to the LM3644 series of dual 1.5-A current source camera flash LED drivers. It is manufactured by Texas Instruments and falls under the LED Lighting Drivers product category. The device is engineered to provide high-efficiency illumination for portable electronic devices, specifically targeting the mobile phone and tablet markets.

LED Driver IC Replacement Considerations

LM3644TTYFFR: Pin-compatible alternative with identical electrical characteristics.

LED Driver IC FAQ

What is the maximum output current per channel?

Each channel can deliver up to 1.5 A.

Does the device support digital control?

Yes, it features an I2C compatible interface for control.