LT3519EMS#TRPBF

LED Driver IC Overview

The LT3519EMS#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 input voltages from 3V to 30V with transient protection up to 40V. It operates at a fixed frequency of 400kHz and offers floating LED current sense pins ranging from 0V to 45V. The supply current is 3.5mA maximum, and it is housed in a 16-pin MSOP package.

LED Driver IC Feature Summary

• Integrates a 45V, 750mA low-side switch and Schottky diode
• Supports Boost, SEPIC, Buck-Boost, or Buck topologies
• Provides up to 3000:1 True Color PWM dimming capability
• Includes open LED protection and status indication

LED Driver IC Applications

• Driving LED strings in automotive lighting systems
• General-purpose constant-current LED driver circuits
• Applications requiring wide input voltage ranges

LED Driver IC Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when ordering. Confirm that the EMS variant corresponds to the MSOP-16 package type required by your PCB layout. Ensure compatibility with the 400kHz switching frequency and check thermal requirements for the intended operating temperature range of -40°C to +125°C before finalizing procurement.

LED Driver IC Selection Notes

Select this component when a single-channel LED driver with high voltage tolerance is needed. It is suitable for designs requiring flexible topology selection including boost and buck-boost configurations. Consider the integrated Schottky diode for simplified external component count. Verify that the 750mA switch current meets the peak load requirements of the target LED array.

LED Driver IC Part Context

This part belongs to the LT3519 family of LED drivers manufactured by Analog Devices Inc. (formerly Linear Technology). The family includes variants such as LT3519IMS and LT3519EMS, which differ primarily in package types like MSOP and SOIC. These devices are engineered for efficient LED illumination with integrated feedback mechanisms.

LED Driver IC Replacement Considerations

Direct substitutes within the same series include LT3519IMS#TRPBF, which shares identical electrical specifications but utilizes a different package form factor. Cross-family replacements require careful evaluation of pinout compatibility and switching frequency differences.