LT3955EUHE

LED Driver IC Overview

The LT3955EUHE is a high-performance LED driver controller from Analog Devices, designed for versatile lighting and power applications. It integrates a 60V-rated N-channel MOSFET capable of delivering up to 3.5A of switch current. The device supports multiple converter topologies including boost, buck, SEPIC, flyback, and inverting configurations. It features an internal PWM generator for dimming control and offers analog dimming capability. Packaged in a compact 36-pin QFN (5x6 mm) with exposed pad, it provides accurate current regulation and output short-circuit protection.

LED Driver IC Feature Summary

• Integrates a 60V rated N-channel MOSFET with 3.5A current handling capability
• Supports multiple DC-DC converter topologies including boost, buck, SEPIC, and flyback
• Includes internal PWM generator for precise digital dimming control
• Provides output short-circuit protection and accurate current regulation

LED Driver IC Applications

• High-power LED lighting systems
• Battery and SuperCapacitor chargers
• Accurate current-limited voltage regulators
• Output short-circuit protected boost converters

LED Driver IC Procurement Notes

Verify the exact suffix against official Analog Devices documentation to confirm package type and tape/reel specifications. Ensure compatibility with thermal management requirements due to the QFN package. Confirm that the 60V rating meets system input voltage constraints. Check for RoHS compliance status if required by specific regulatory standards.

LED Driver IC Selection Notes

Select this component when a single IC solution is needed for multiple LED driver topologies. It is suitable for designs requiring integrated power switching without external MOSFETs. Consider the 36-pin QFN footprint for space-constrained PCB layouts. Evaluate thermal performance needs given the integrated high-current switch.

LED Driver IC Part Context

The LT3955EUHE belongs to the LT3955 family of LED drivers from Analog Devices. This series is characterized by its multi-topology flexibility and integrated power stage. It is part of ADI's portfolio of power management ICs aimed at simplifying LED lighting and battery charging designs through integration and reduced component count.

LED Driver IC Replacement Considerations

Check Analog Devices datasheets for direct pin-compatible alternatives within the LT3955 series. Verify if other variants offer different current ratings or packaging options while maintaining the same functional interface.