LT3797EUKG#PBF

LED Driver IC Overview

The LT3797EUKG#PBF is a triple-output DC/DC controller designed for LED lighting applications. It supports Boost, Buck, Buck-Boost, Flyback, and SEPIC topologies. The device operates with an input voltage range of 2.5 V to 40 V and delivers up to 5 A output current. It features a fixed frequency switching range from 100 kHz to 1 MHz and maintains a maximum supply current of 750 uA. Packaged in a 52-pin QFN (7x8 mm) format, it functions within a temperature range of -40°C to +125°C.

LED Driver IC Feature Summary

• Supports multiple power conversion topologies including Boost, Buck, Buck-Boost, Flyback, and SEPIC for flexible LED string driving.
• Integrates PWM dimming capability for precise brightness control of connected LED loads.
• Includes open LED protection mechanisms to ensure system safety during fault conditions.

LED Driver IC Applications

• High-power LED lighting systems requiring three independent output channels
• Industrial and commercial illumination fixtures utilizing complex driver architectures
• Automotive lighting applications compatible with wide input voltage ranges

LED Driver IC Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm the specific suffix matches the required package variant. Check current availability status as supply may be limited. Ensure storage conditions comply with moisture sensitivity levels prior to assembly. Validate that the procurement source provides valid traceability documentation.

LED Driver IC Selection Notes

Select this controller when designing circuits requiring simultaneous drive for three distinct LED strings. Consider the 52-QFN package constraints for thermal management and PCB layout. Evaluate the 100 kHz to 1 MHz operating frequency against electromagnetic interference requirements. Ensure the external component selection aligns with the 40 V maximum voltage ratings for both input and output stages.

LED Driver IC Part Context

This component belongs to the LT3797 series of multi-channel LED drivers. It shares architectural similarities with other high-performance controllers but is distinguished by its triple-output configuration. The part integrates current mode control for stable operation across various load conditions and topologies.

LED Driver IC Replacement Considerations

LT3797ILXE#PBF is a documented alternative offering similar functionality in a different package format.

LED Driver IC FAQ

What switching topologies are supported by the LT3797EUKG#PBF?

The device supports Boost, Buck, Buck-Boost, Flyback, and SEPIC configurations.

Does the LT3797EUKG#PBF support analog dimming?

Yes, the controller includes integrated PWM dimming capabilities for brightness control.