LT3954IUHE#PBF

LED Driver IC Overview

The LT3954IUHE#PBF is a high-performance LED lighting driver IC from Analog Devices, designed for versatile power conversion topologies including Boost, Buck, Flyback, and SEPIC. It features an integrated PWM generator for dimming control and supports input voltages ranging from 4.5 V to 40 V. The device delivers up to 5 A output current with adjustable output voltage. Operating frequencies range from 100 kHz to 1 MHz within a QFN-36 package. It functions reliably across temperatures from -40°C to +125°C, offering open LED protection and low standby current of 2.2 mA maximum.

LED Driver IC Feature Summary

• Supports multiple converter topologies including Boost, Buck, Flyback, and SEPIC configurations
• Integrates internal PWM generator for precise dimming applications
• Provides open LED protection for enhanced system reliability
• Operates with wide input voltage range suitable for various power sources

LED Driver IC Applications

• LED lighting driver systems requiring multi-topology flexibility
• Industrial illumination applications needing wide input voltage tolerance
• Automotive lighting circuits operating in extended temperature ranges
• High-power LED arrays utilizing integrated PWM dimming control

LED Driver IC Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm the specific suffix matches the required package and temperature grade. Request official datasheets and test reports to ensure compliance with specified electrical parameters. Check for RoHS certification status prior to integration. Validate supply chain documentation to prevent counterfeit components.

LED Driver IC Selection Notes

Select this component when designing LED drivers requiring flexible topology options such as Buck, Boost, or Flyback. Consider the 5 A current capability and 40 V input limit for high-power applications. Ensure thermal management strategies align with the QFN-36 package constraints. Verify that the 100 kHz to 1 MHz frequency range meets EMI requirements. Evaluate the need for internal PWM generation versus external control signals.

LED Driver IC Part Context

This part belongs to the LT3954 series of LED lighting drivers from Analog Devices. It is engineered for robust performance in demanding lighting environments. The series emphasizes efficiency and flexibility through support for various switching converter architectures. The component integrates key control functions to simplify design implementation while maintaining high reliability standards for industrial and automotive use cases.

LED Driver IC Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.