LT3599EFE

LED Driver IC Overview

The LT3599EFE is a fixed frequency step-up DC/DC converter designed to drive four strings of LEDs. It provides up to 120mA per channel with ±1.5% current matching accuracy. The device supports output voltages up to 44V and operates from an input voltage range of 3.1V to 30V. It features analog PWM dimming capability and includes open LED protection. The switching frequency is programmable via an external resistor, ranging from 200kHz to 2.1MHz. The IC incorporates thermal protection functions for derating at high temperatures.

LED Driver IC Feature Summary

• Four-channel constant current regulation with high precision matching
• Programmable switching frequency for flexible design optimization
• Integrated thermal protection and current derating mechanisms
• Supports wide input voltage ranges for diverse power sources

LED Driver IC Applications

• Automotive interior lighting systems
• High-brightness LED backlighting arrays
• Industrial illumination fixtures
• Portable lighting equipment requiring multiple LED strings

LED Driver IC Procurement Notes

Verify the specific suffix (EFE) corresponds to the 28-pin TSSOP-EP package when sourcing. Confirm that the TRPBF variant indicates tape and reel packaging if continuous production volume is required. Ensure compatibility with automotive grade requirements if applicable, as some listings indicate automotive qualification. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components.

LED Driver IC Selection Notes

Select this component when precise current matching across four independent LED channels is critical. The wide input voltage range accommodates various battery or rail configurations. Consider the programmable frequency to minimize electromagnetic interference in sensitive environments. Verify that the maximum output voltage of 44V aligns with the series configuration of the target LED array.

LED Driver IC Part Context

The LT3599EFE belongs to the LT3599 family of LED drivers manufactured by Analog Devices. It is specifically engineered for applications requiring multi-string LED control with high uniformity. The device integrates the boost converter and current regulators into a single solution, reducing external component count compared to discrete designs.

LED Driver IC Replacement Considerations

LT3599EFE#TRPBF serves as the tape-and-reel equivalent of the tube-packaged version. Direct functional substitutes are not explicitly confirmed in public documentation; alternative selection requires matching the 4-channel 120mA specification and 44V output limit.