LT3755EMSE-1#WPBF

LED Driver IC Overview

The LT3755EMSE-1#WPBF is a DC/DC controller designed as a constant-current source for driving high-current LEDs. It operates with an input voltage range of 6V to 40V and supports output voltages up to 75V. The device utilizes a fixed frequency, current-mode architecture for stable operation across wide supply and output voltage variations. It features an internal regulated 7.15V supply to drive an external low-side N-channel power MOSFET. The component is available in a 16-pin MSOP package and supports analog and PWM dimming.

LED Driver IC Feature Summary

• Fixed frequency current-mode architecture ensures stable operation over wide input and output voltage ranges
• Internal regulated 7.15V supply drives external low-side N-channel power MOSFET
• Supports multiple topologies including Buck, Boost, Buck-Boost, Flyback, and SEPIC
• Capable of analog and PWM dimming control

LED Driver IC Applications

• Automotive LED lighting systems
• General LED lighting drivers
• Display backlights
• Indicator lights

LED Driver IC Procurement Notes

Verify the specific suffix (#WPBF) against the manufacturer's official documentation to confirm package type and tape/reel specifications. Ensure compatibility with the required operating temperature range (-40°C to +125°C). Cross-reference the part number with Analog Devices' latest datasheets to confirm availability status and any potential obsolescence notices before finalizing procurement plans.

LED Driver IC Selection Notes

Select this controller when designing LED drivers requiring a wide input voltage range (6V to 40V) and high output voltage capability (up to 75V). It is suitable for applications needing flexible topology options such as Buck-Boost or SEPIC. Consider the 16-pin MSOP package constraints and the requirement for an external power MOSFET. Verify that the design supports the necessary thermal management for the specified operating temperature range.

LED Driver IC Part Context

The LT3755 series from Analog Devices comprises DC/DC controllers optimized for high-current LED driving. These devices are engineered to provide precise constant-current regulation. The EMSE-1 variant specifically denotes the MSOP-16 package and industrial temperature grade. This family allows designers to implement efficient LED solutions using minimal external components while maintaining robust performance under varying load conditions.

LED Driver IC Replacement Considerations

Consult Analog Devices documentation for direct pin-to-pin replacements within the LT3755 family. Verify electrical parameters such as input voltage limits and switching frequency compatibility. Ensure alternative parts support the same topologies and dimming methods required by the existing circuit design.