LT3967EFE#PBF

LED Driver IC Overview

The LT3967EFE#PBF is an 8-switch matrix LED dimmer IC from Analog Devices Inc., housed in a 28-lead TSSOP-EP package. It supports Buck, Boost, Inverting, and SEPIC topologies with a 1.3A output current capability and up to 56V output voltage. The device operates on a 2.7V to 5.5V supply range and features a 2MHz switching frequency. Control is managed via an I²C serial interface with programmable addressing and CRC-8 packet error checking. It provides 11-bit precision exponential fade for linear PWM dimming.

LED Driver IC Feature Summary

• Supports multiple DC/DC converter topologies including Buck, Boost, Inverting, and SEPIC for flexible LED drive configurations.
• Integrates an I²C serial interface with programmable address and CRC-8 error checking for reliable digital control.
• Provides 11-bit precision exponential fade capabilities for smooth linear PWM dimming applications.

LED Driver IC Applications

• LED lighting driver systems requiring multi-channel matrix dimming
• Automotive or industrial backlighting using complex LED arrays
• General illumination designs utilizing Buck, Boost, or SEPIC converter topologies

LED Driver IC Procurement Notes

Verify the specific suffix PBF indicates lead-free compliance when ordering. Confirm the 28-TSSOP-EP package type matches your PCB footprint requirements. Ensure the I²C address configuration aligns with your system's bus architecture. Check the operating temperature range of -40°C to 125°C against your environmental specifications before finalizing procurement.

LED Driver IC Selection Notes

Select this component when an 8-channel LED matrix dimmer with integrated power switches is required. It is suitable for designs needing flexible input/output voltage relationships through its multi-topology support. The I²C interface makes it ideal for systems requiring precise digital control and status monitoring. Consider the 1.3A per switch limit and 56V maximum output voltage when sizing the LED load.

LED Driver IC Part Context

This part belongs to the LT396x series of LED drivers from Analog Devices, designed for high-performance lighting applications. It complements other devices like the LT3965 and LT3964 by offering an 8-switch matrix configuration rather than fewer channels or different architectures. The series focuses on providing robust dimming control and efficient power conversion in a compact surface-mount package.

LED Driver IC Replacement Considerations

The LT3965EFE#PBF is a related 8-switch matrix dimmer within the same family. Verify if the specific electrical characteristics and topology support of the alternative meet the design requirements before substitution.

LED Driver IC FAQ

What DC/DC topologies does the LT3967EFE#PBF support?

It supports Buck, Boost, Inverting, and SEPIC topologies to accommodate various LED string configurations.

How is the dimming controlled in this device?

Dimming is controlled via an I²C serial interface that allows for programmable settings and includes CRC-8 error checking.

What is the maximum output voltage capability?

The device can drive LEDs with a maximum output voltage of 56V.