LT3965IFE

LED Driver IC Overview

The LT3965IFE is an LED bypass switching device designed for dimming individual LEDs within a string using a common current source. It features eight individually addressable channels, allowing precise control over each LED. The device integrates DC-DC regulation capabilities, supporting both step-down (buck) and step-up (boost) configurations to accommodate various LED string voltages. It supports I2C and PWM dimming interfaces for flexible control schemes. The output current per channel is rated at 500mA, suitable for high-brightness applications. The component operates with a maximum supply voltage of 60V and functions across a junction temperature range of -40°C to 125°C.

LED Driver IC Feature Summary

• Eight individually addressable bypass channels for precise LED dimming
• Integrated DC-DC regulator supporting buck and boost topologies
• Dual dimming interface compatibility with I2C and PWM signals

LED Driver IC Applications

• LED lighting systems requiring individual channel control
• Display backlighting applications needing precise brightness regulation
• Indicator circuits utilizing common current sources

LED Driver IC Procurement Notes

Verify the specific suffix of the part number when ordering, as variants such as LT3965IFE#PBF and LT3965IFE-1#PBF exist with potential functional or packaging differences. Confirm that the required package type matches the design constraints, typically 28-TSSOP-EP. Ensure that the selected variant aligns with the intended application's voltage and current requirements before finalizing procurement.

LED Driver IC Selection Notes

Select this component when designing LED drivers that require independent dimming of multiple LEDs from a single current source. Consider the LT3965IFE if the application demands integrated buck/boost regulation to handle varying LED forward voltages. Evaluate the need for I2C or PWM control interfaces to determine if this device's communication capabilities meet the system's control architecture requirements.

LED Driver IC Part Context

The LT3965IFE belongs to Analog Devices' family of LED driver ICs, specifically engineered for complex lighting control scenarios. It complements other devices in the series by offering multi-channel bypass functionality, distinguishing it from standard constant current regulators. This part is often utilized in conjunction with evaluation boards like the EVAL-LT3964-1-AZ for development purposes, though it serves distinct architectural needs compared to simpler driver solutions.

LED Driver IC Replacement Considerations

LT3965IFE-1#PBF is a confirmed substitute part number within the same product family.