LT3964IUHE#PBF

LED Driver IC Overview

The LT3964IUHE#PBF is a dual synchronous buck LED driver IC from Analog Devices Inc., housed in a 36-lead QFN package. It operates with an input voltage range up to 36V and provides two independent current-regulated outputs, each capable of delivering up to 1.6A. The device features an integrated I2C interface for programmable control of output currents and dimming functions. It supports PWM dimming and includes protection features such as thermal shutdown and overcurrent protection. The operating temperature range extends from -40°C to +85°C, making it suitable for automotive and industrial lighting applications.

LED Driver IC Feature Summary

• Dual independent synchronous buck channels for precise LED current regulation
• Integrated I2C interface for digital control of dimming and current settings
• Supports high-frequency PWM dimming for flicker-free operation
• Built-in thermal and overcurrent protection for system reliability

LED Driver IC Applications

• Automotive interior and exterior LED lighting systems
• Industrial LED panel lighting
• Display backlighting for commercial signage
• General illumination LED drivers

LED Driver IC Procurement Notes

Verify the exact suffix (e.g., #PBF vs #TRPBF) against your Bill of Materials, as packaging differs. Confirm lead times due to potential supply constraints. Ensure ESD handling protocols are followed during assembly. Cross-reference the datasheet revision date to confirm feature compatibility with your design requirements.

LED Driver IC Selection Notes

Select this component when dual-channel buck conversion is required within a 36V input limit. The I2C interface is critical for designs needing digital dimming control. Consider the 36QFN package size for PCB layout constraints. Evaluate thermal performance under maximum load conditions given the 1.6A per channel capability.

LED Driver IC Part Context

This part belongs to the LT3964 family of LED drivers, designed specifically for high-efficiency synchronous buck topologies. It complements other Analog Devices LED solutions by offering digital control via I2C, distinguishing it from purely analog counterparts. The #PBF suffix indicates a lead-free, RoHS-compliant tape-and-reel or tube packaging option depending on specific sub-variants.

LED Driver IC Replacement Considerations

Direct substitutes include the LT3964EUHE#PBF for similar functionality in different packages. For single-channel applications, consider the LT3963 series. Always verify pinout compatibility and thermal characteristics before swapping components in existing designs.