LT3755IUD#PBF

LED Driver IC Overview

The LT3755IUD#PBF is a DC/DC controller designed as a constant-current source for driving high-current LEDs. It features an input voltage range of 4.5 V to 40 V and supports output voltages up to 75 V. The device delivers a typical maximum output current of 10 A with a supply current of 1700 µA. Operating frequencies range from 100 kHz to 1 MHz. It accommodates Boost, Buck, Buck-Boost, Flyback, and SEPIC topologies. The component is housed in a 16-pin QFN package and operates within a temperature range of -40°C to +125°C.

LED Driver IC Feature Summary

• Supports multiple converter topologies including Boost, Buck, Buck-Boost, Flyback, and SEPIC configurations.
• Provides PWM dimming capability with a ratio of 250:1 for precise light control.
• Includes open LED protection functionality to safeguard the system during fault conditions.

LED Driver IC Applications

• LED lighting systems requiring high current drive capabilities
• Display backlighting applications needing adjustable brightness control
• Indicator circuits utilizing PWM dimming features

LED Driver IC Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm package type and temperature grade. Ensure compatibility with external N-channel MOSFETs for the low-side switch configuration. Confirm that the design accounts for the 16-pin QFN thermal requirements and operating voltage limits specified in the datasheet.

LED Driver IC Selection Notes

Select this controller when a single-channel solution is required for high-current LED arrays. Consider the wide input voltage range suitable for various power sources. Evaluate the need for integrated PWM dimming and open LED protection features before choosing alternative discrete solutions.

LED Driver IC Part Context

This component belongs to the LT3755 series of LED lighting drivers manufactured by Analog Devices Inc. The series includes variants such as LT3755-1 and LT3755-2, which share similar core functionalities but may differ in specific electrical characteristics or pinout configurations.

LED Driver IC Replacement Considerations

LT3755IUD-1#PBF and LT3755IUD-2#PBF are related parts within the same family. Verify functional equivalence and pin compatibility before substitution.