LT3497EDDB#TRMPBF

LED Driver IC Overview

The LT3497EDDB#TRMPBF is a dual full-function step-up DC/DC converter designed for driving up to twelve white LEDs. It integrates two independent boost converters, each capable of driving six series-connected LEDs. The device operates from an input voltage range supporting single-cell lithium-ion or multi-cell battery applications. Key electrical parameters include a maximum output voltage of 40V per channel and a switch current limit of 400mA. It features adjustable switching frequency and supports PWM dimming control. The component is housed in a compact 10-lead DFN (3x2mm) package with an exposed thermal pad.

LED Driver IC Feature Summary

• Dual independent synchronous boost converters for high-density LED arrays
• Integrated PWM dimming capability for precise brightness control
• Adjustable switching frequency to optimize external component size
• Thermal regulation and cycle-by-cycle current limiting protection

LED Driver IC Applications

• Portable medical devices requiring multiple white LED illumination
• Smartphone and tablet camera flash systems
• Backlighting for mobile consumer electronics displays
• Automotive interior lighting modules

LED Driver IC Procurement Notes

Verify the specific suffix TRMPBF indicates tape and reel packaging when ordering. Confirm the 10-DFN footprint dimensions match your PCB layout requirements. Ensure thermal pad soldering practices are defined for reliable heat dissipation. Check for RoHS compliance documentation if required by your manufacturing standards. Validate that the 40V output rating aligns with your LED string configuration.

LED Driver IC Selection Notes

Select this component when dual-channel LED drive is necessary within a limited board area. The integrated synchronous rectification improves efficiency compared to non-synchronous alternatives. Consider the 400mA current limit when sizing the LED strings. The adjustable frequency allows optimization between efficiency and passive component size. Verify input voltage compatibility with the power source, such as single-cell Li-ion batteries.

LED Driver IC Part Context

This part belongs to the LT3494/LT3497 family of LED drivers from Analog Devices. While the LT3494 offers a single channel, the LT3497 provides dual channels in a similar form factor. Both share common design principles for portable LED applications. The EDDB suffix denotes the specific 10-lead DFN package variant. This family targets space-constrained portable electronics requiring high-efficiency illumination.

LED Driver IC Replacement Considerations

LT3497EDDB#TRPBF is the same device in tube packaging instead of tape and reel. LT3494AEDDB#TRMPBF is a single-channel alternative with different pinout and current ratings. Cross-referencing requires verifying pin compatibility and thermal performance. Ensure substitute parts meet the same 40V output and 400mA current specifications.