LT3755EMSE#TRPBF

LED Driver IC Overview

The LT3755EMSE#TRPBF is a DC/DC controller designed for driving high-current LEDs in automotive and industrial applications. It operates with an input voltage range of 4.5 V to 40 V and supports output voltages up to 75 V. The device delivers a constant output current of 10 A using a fixed-frequency, current-mode architecture. It features an internal regulated 7.15 V supply to drive external low-side N-channel power MOSFETs. The controller supports PWM dimming and includes open LED protection. Operating frequencies are adjustable from 100 kHz to 1 MHz. It is housed in a 16-lead MSOP package with exposed pad and functions across a temperature range of -40°C to +125°C.

LED Driver IC Feature Summary

• Supports Buck, Boost, Buck-Boost, Flyback, and SEPIC topologies for flexible LED driver designs
• Provides precise constant current regulation for high-current LED strings
• Integrates internal 7.15V regulator to simplify external MOSFET gate drive requirements
• Includes built-in open LED protection to enhance system reliability

LED Driver IC Applications

• Automotive exterior lighting systems
• High-power LED illumination drivers
• Industrial LED lighting fixtures
• Display backlighting applications

LED Driver IC Procurement Notes

Verify the specific suffix (#TRPBF) indicates tape and reel packaging when sourcing components. Confirm that the part number matches the exact electrical specifications required for your design, particularly the 10A output current capability and 40V input limit. Ensure compatibility with the 16-MSOP-EP package footprint during PCB layout. Check for RoHS compliance status if environmental regulations apply to your manufacturing process. Validate supplier authenticity through authorized distribution channels to avoid counterfeit components.

LED Driver IC Selection Notes

Select this component when designing LED drivers requiring high current capacity up to 10A and wide input voltage ranges suitable for automotive environments. Consider the LT3755 family if flexibility in topology selection (Buck, Boost, etc.) is needed within a single controller solution. Evaluate the thermal performance requirements associated with the MSOP-EP package for high-power dissipation scenarios. Compare against other controllers if lower current outputs or different package sizes are preferred for space-constrained designs.

LED Driver IC Part Context

The LT3755 belongs to Analog Devices' line of LED lighting driver ICs, specifically engineered for robust performance in demanding environments. It complements other members of the LT3755 series, such as the LT3755IMSE variants, which may offer different temperature grades or packaging options. This controller is part of a broader portfolio of power management solutions aimed at simplifying high-efficiency LED driver implementations across various industries.

LED Driver IC Replacement Considerations

Direct substitutes within the same family include LT3755EMSE#PBF (tube packaging) or LT3755IMSE variants for industrial temperature ranges. Verify pinout and electrical parameter compatibility before replacing. No cross-model functional changes are implied by suffix variations unless explicitly documented.