LT3476EUHF#TRPBF

LED Driver IC Overview

The LT3476EUHF#TRPBF is a high-current quad output LED driver manufactured by Analog Devices Inc. It functions as a DC-DC converter designed to operate as a constant-current source for driving high-current LEDs. The device utilizes a fixed frequency, current mode architecture that ensures stable operation across a wide range of supply and output voltages. Key electrical parameters include an input voltage range of 2.8V to 16V and a maximum output power capability of 100W. The switching frequency is programmable via an external pin, allowing adjustment between 200kHz and 2MHz to optimize efficiency and minimize external component size. The component is housed in a 38-pin QFN EP package.

LED Driver IC Feature Summary

• Fixed frequency current mode architecture provides stable operation over wide supply and output voltage ranges
• Programmable switching frequency allows optimization of efficiency and external component size
• Designed specifically as a constant-current source for driving high-current LEDs

LED Driver IC Applications

• High current LED lighting systems
• Quad output DC-DC conversion for LED drivers
• Automotive LED applications

LED Driver IC Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm the automotive grade designation if required for your application environment. Ensure the 38-pin QFN EP footprint matches your PCB layout constraints. Cross-reference the datasheet revision to confirm compatibility with your design specifications before finalizing procurement orders.

LED Driver IC Selection Notes

Select this component when designing multi-channel LED drivers requiring high current capacity and wide input voltage flexibility. The programmable frequency feature is critical for balancing electromagnetic interference against passive component physical dimensions. Consider the thermal performance of the exposed pad QFN package for high-power dissipation scenarios involving 100W outputs.

LED Driver IC Part Context

This part belongs to the LT3476 family of high-current quad output LED drivers from Analog Devices. It is distinct from single-output or lower channel count variants within the broader power management portfolio. The EUHF designation specifies the industrial temperature range and lead-free RoHS-compliant construction suitable for modern manufacturing processes.

LED Driver IC Replacement Considerations

LT3476EUFH#TRPBF

LED Driver IC FAQ

What is the operating range for the switching frequency?

The switching frequency can be programmed between 200kHz and 2MHz using the frequency adjust pin.

Does the LT3476 support automotive applications?

Yes, the datasheet identifies the device as suitable for automotive LED driver applications.