LT3599EUH#TRPBF

LED Driver IC Overview

The LT3599EUH#TRPBF is a fixed-frequency step-up DC/DC converter designed to drive four strings of LEDs. It provides 120mA output current per channel with ±1.5% current matching accuracy. The device supports an input voltage range of 2.7V to 30V and can deliver up to 44V output voltage. Switching frequency is programmable from 200kHz to 2.1MHz via an external resistor. It features analog and PWM dimming capabilities through dedicated control pins.

LED Driver IC Feature Summary

• Integrates internal power switches for compact LED driver designs
• Supports both analog and pulse-width modulation dimming methods
• Ensures high precision in current regulation across multiple channels

LED Driver IC Applications

• Automotive exterior lighting systems
• Industrial area lighting fixtures
• High-brightness LED arrays requiring precise current matching

LED Driver IC Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing components. Confirm that the EUH package designation corresponds to the 32-QFN (5x5) footprint required for your PCB layout. Ensure compatibility with Analog Devices or Linear Technology supply chains as the manufacturer history involves acquisition. Cross-reference the datasheet revision date to confirm material declarations and epoxy changes if applicable for automotive qualification standards.

LED Driver IC Selection Notes

Select this component when designing multi-string LED drivers requiring tight current matching without external resistors. It is suitable for applications needing wide input voltage ranges and programmable switching frequencies to optimize efficiency. Consider the thermal performance of the QFN package for high-power density designs. Verify that the required output voltage does not exceed the 44V limit for the intended LED configuration.

LED Driver IC Part Context

This part belongs to the LT3599 family of LED drivers manufactured by Analog Devices Inc., formerly Linear Technology. The EUH variant specifically denotes the 32-lead QFN package, distinguishing it from TSSOP versions like the LT3599EFE. The family is characterized by integrated boost converters optimized for driving multiple LED strings in automotive and industrial applications.

LED Driver IC Replacement Considerations

LT3599EUH#PBF offers the same electrical specifications in a leaded package instead of tape and reel. LT3599EFE variants provide identical functionality but utilize a 28-TSSOP-EP package, requiring PCB layout adjustments.