LT3755EMSE#WPBF

LED Driver IC Overview

The LT3755EMSE#WPBF is a DC/DC controller designed for high-current LED applications, operating as a constant-current source. It features an input voltage range of 4.5 V to 40 V and supports adjustable output voltages up to 75 V. The device utilizes a fixed-frequency current-mode architecture with switching frequencies between 100 kHz and 1 MHz. It drives external N-channel power MOSFETs via an internal 7.15 V regulated supply. Key electrical specifications include a maximum quiescent current of 1.7 mA and operation across a temperature range of -40°C to +125°C.

LED Driver IC Feature Summary

• Supports multiple topologies including Boost, Buck, Buck-Boost, Flyback, and SEPIC configurations.
• Integrates PWM dimming capability and open LED protection mechanisms.
• AEC-Q100 qualified for automotive reliability standards.
• Fixed frequency current-mode control ensures stable operation over wide input and output voltage ranges.

LED Driver IC Applications

• Automotive LED lighting systems
• High-power LED illumination drivers
• Industrial LED backlighting
• General-purpose constant-current LED sources

LED Driver IC Procurement Notes

Verify the specific suffix #WPBF against the manufacturer's official datasheet to confirm package type and compliance status. Ensure the ordering part number matches the required tape-and-reel configuration if applicable. Cross-reference the AEC-Q100 qualification requirements with your system's environmental specifications. Confirm that the MSOP-16 package dimensions align with your PCB layout constraints before finalizing procurement.

LED Driver IC Selection Notes

Select this component when designing circuits requiring flexible topology options such as buck-boost or flyback for LED driving. Consider the 4.5 V to 40 V input range compatibility with various power sources. Evaluate the need for AEC-Q100 qualification if deploying in automotive environments. Assess thermal management requirements given the 125°C maximum junction temperature rating and the MSOP-16 package footprint.

LED Driver IC Part Context

This part belongs to the LT3755 series of LED lighting driver ICs manufactured by Analog Devices. It is specifically engineered for driving high-current LEDs using external power switches. The series offers versatile control architectures suitable for diverse lighting applications, ranging from simple boost converters to complex multi-stage topologies like SEPIC and flyback.

LED Driver IC Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify functional equivalence with other LT3755 variants (e.g., LT3755EMSE-1#WPBF) only if their datasheets explicitly state pin-to-pin compatibility and identical electrical characteristics.