LT3519IMS-2#TRPBF

LED Driver IC Overview

The LT3519IMS-2#TRPBF is a fixed-frequency step-up DC/DC converter designed for LED driving applications. It features an internal 45V, 750mA low-side switch and an integrated Schottky diode. The device supports multiple topologies including Boost, Buck, Buck-Boost, and SEPIC. It operates with a wide input voltage range from 3V to 30V and utilizes a floating LED current sense pin for flexible configuration. The switching frequency is fixed at 2.2MHz. The component provides constant-current and constant-voltage regulation capabilities.

LED Driver IC Feature Summary

• Integrates a 45V, 750mA low-side switch and Schottky diode to minimize external component count
• Supports versatile LED drive configurations via Boost, Buck, Buck-Boost, or SEPIC topologies
• Enables high-resolution dimming through True Color PWM technology and analog control inputs

LED Driver IC Applications

• LED lighting systems requiring flexible topology selection
• Automotive interior and exterior illumination circuits
• Portable devices utilizing battery-powered LED arrays

LED Driver IC Procurement Notes

Verify the specific suffix designation to confirm package type and reel quantity specifications. Ensure compatibility with the intended PCB footprint and thermal management requirements. Confirm that the 2.2MHz switching frequency aligns with electromagnetic interference constraints in the target application environment.

LED Driver IC Selection Notes

Select this component when a single IC solution is required for various LED drive topologies. The integrated Schottky diode reduces board space compared to discrete solutions. Consider the 750mA switch current limit when designing for higher power LED strings. Verify input voltage ranges against the specific power supply architecture.

LED Driver IC Part Context

This part belongs to the LT3519 family of LED drivers manufactured by Analog Devices Inc. The IMS-2 variant specifically denotes the MSOP-16 package with a 2.2MHz fixed switching frequency. The TRPBF suffix indicates tape-and-reel packaging with lead-free composition. This series is engineered for compact designs where space efficiency and regulatory compliance are critical.

LED Driver IC Replacement Considerations

LT3519EMS-2#TRPBF shares identical electrical characteristics but differs in package style. LT3519IMS#TRPBF offers similar functionality with a different switching frequency. Verify pinout compatibility and thermal performance before substituting.