LT3964RUHE-1#PBF

LED Driver IC Overview

The LT3964RUHE-1#PBF is a dual synchronous step-down DC/DC converter designed for LED lighting applications. It features an I2C interface for control and supports operation as both a constant-current and constant-voltage source. The device operates with an input voltage range of 4V to 36V and delivers up to 2A output current per channel. It offers a programmable switching frequency from 200kHz to 2MHz and supports analog and PWM dimming methods. The component is rated for operating temperatures between -40°C and 150°C and is housed in a 36-lead QFN-EP package.

LED Driver IC Feature Summary

• Dual synchronous buck architecture providing independent constant-current or constant-voltage regulation for two channels
• Integrated I2C interface enabling digital control, configuration, and monitoring capabilities
• Supports both analog and pulse-width modulation (PWM) dimming techniques for precise brightness control

LED Driver IC Applications

• General purpose LED illumination systems
• Industrial lighting fixtures requiring high reliability
• Medical equipment utilizing regulated LED sources

LED Driver IC Procurement Notes

Verify the specific suffix #PBF indicates lead-free tape-and-reel packaging compliant with RoHS standards. Confirm that the RUHE designation corresponds to the correct thermal pad and pinout configuration for your PCB layout. Ensure compatibility with the required I2C bus speed and voltage levels for system integration. Check for any recent product change notifications regarding material composition or manufacturing site updates.

LED Driver IC Selection Notes

Select this component when dual-channel isolated or non-isolated LED driving is required within a 36V input limit. The integrated I2C interface simplifies system design by reducing external control logic. Consider the 2A per channel capability for medium-power LED arrays. Evaluate the thermal performance requirements given the 150°C junction temperature rating and the QFN-EP package's heat dissipation characteristics.

LED Driver IC Part Context

This part belongs to the LT3964 family of synchronous LED drivers from Analog Devices. It shares functional similarities with other members like the LT3964IFE-1 but differs in package type and thermal specifications. The family is designed for high-efficiency LED lighting solutions requiring precise current regulation and digital control interfaces.

LED Driver IC Replacement Considerations

Direct substitutes include other LT3964 variants such as LT3964IFE-1#WPBF, provided the package footprint and thermal requirements match the design. Cross-reference with LT8374 for similar synchronous buck LED driver functionality if different switching frequencies are needed.