LT3755EMSE-1#PBF

LED Driver IC Overview

The LT3755EMSE-1#PBF is a DC/DC controller designed for high-current LED driving applications. It operates as a constant-current source with an input voltage range of 4.5V to 40V and supports output voltages up to 75V. The device features a fixed frequency, current-mode architecture that ensures stable operation across wide supply and output voltage variations. It drives an external low-side N-channel power MOSFET using an internal regulated 7.15V supply. The component is available in a 16-pin MSOP package and is rated for an operating temperature range from -40°C to +125°C.

LED Driver IC Feature Summary

• Fixed frequency current-mode architecture for stable operation over wide voltage ranges
• Internal regulated 7.15V supply for driving external low-side N-channel MOSFETs
• Designed specifically as a constant-current source for high-current LEDs

LED Driver IC Applications

• Automotive LED lighting systems
• High-power LED driver circuits
• Buck-boost LED topology implementations

LED Driver IC Procurement Notes

Verify availability status carefully as this part may be subject to limited supply or factory special order constraints. Confirm the exact suffix matches the required specifications, as ordering suffixes define package and tape/reel options. Check regional distribution restrictions before placing orders. Ensure compatibility with existing thermal management designs given the 125°C maximum operating temperature rating.

LED Driver IC Selection Notes

Select this controller when a buck-boost topology is required for automotive or industrial LED applications. It is suitable for designs needing an input range of 4.5V to 40V and output capabilities up to 75V. Consider the 16-pin MSOP package size for space-constrained layouts. Ensure the external MOSFET selection aligns with the internal 7.15V drive capability and the target 10A output current requirements.

LED Driver IC Part Context

The LT3755 series includes variants such as the LT3755-1 and LT3755-2, which share similar functional architectures but may differ in specific electrical characteristics or pin configurations. The LT3755EMSE-1#PBF is part of Analog Devices' portfolio of LED lighting driver ICs. It is distinct from charge pump devices like the LTC3255 series, which serve different voltage regulation functions.

LED Driver IC Replacement Considerations

Public confirmed substitute part numbers are not provided in the available documentation. Verify cross-reference data through official manufacturer channels if alternative sourcing is required.