LT3598EUF#PBF

LED Driver IC Overview

The LT3598EUF#PBF is a fixed frequency step-up DC/DC converter designed to drive up to six strings of LEDs at an output voltage up to 44V. It supports analog dimming on the CTRL pin and pulse width modulation (PWM) dimming on the PWM pin, delivering up to 30mA per string with 1.5% current matching accuracy. The switching frequency is programmable from 200kHz to 2.5MHz via an external resistor. The device features a wide input voltage range of 3.2V to 30V and includes programmable overvoltage protection, frequency synchronization, thermal derating, LED string disable control, and an OPENLED alert pin.

LED Driver IC Feature Summary

• Drives six independent LED strings with high-accuracy current matching
• Supports both analog and True Color PWM dimming methods
• Provides comprehensive protection including overvoltage and open LED alerts
• Allows flexible switching frequency programming and external clock synchronization

LED Driver IC Applications

• LED lighting systems requiring multi-string driver solutions
• Display backlight applications needing precise current regulation
• Industrial indicator circuits utilizing high-brightness LEDs

LED Driver IC Procurement Notes

Verify component authenticity through official Analog Devices channels or authorized distributors. Confirm package integrity and RoHS compliance status upon receipt. Ensure storage conditions meet specified temperature and humidity limits to prevent moisture sensitivity issues prior to soldering. Review latest datasheet revisions for any updates to electrical characteristics or recommended operating conditions.

LED Driver IC Selection Notes

Select this component when designing boost converters for multi-string LED arrays requiring tight current matching. Consider the 200kHz to 2.5MHz frequency range for inductor size optimization. Evaluate thermal management requirements given the 125°C junction temperature limit. Ensure input voltage stays within the 3.2V to 30V range and output does not exceed 44V.

LED Driver IC Part Context

This part belongs to the LT3598 family of LED drivers from Analog Devices. It is specifically engineered for applications demanding high efficiency and precise current regulation across multiple parallel LED strings. The QFN package offers thermal performance suitable for compact designs.

LED Driver IC Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.