LT4363IDE-1#TRPBF

Overview

The LT4363IDE-1#TRPBF is a high voltage surge stopper with current limit manufactured by Analog Devices Inc. It operates within an input supply range of 5.7V to 31.6V DC and withstands survival voltages up to 80V DC, with transient survival up to 250V. The device limits output voltage to approximately 16.3V during overvoltage events and features current limiting for MOSFET protection. It utilizes a DFN-12 surface-mount package and functions in an industrial temperature range from -40°C to +85°C.

Feature Summary

• Provides board-level surge protection by clamping high-voltage transients to safe levels
• Integrates current limiting to protect downstream components from output overloads
• Features latch-off operation that requires external reset via the SHDN pin after fault conditions

Applications

• Industrial control systems requiring robust power input protection
• Avionics equipment needing reliable surge suppression
• Automotive electronics subject to high-voltage transients

Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing. Confirm the -1 variant designation corresponds to the latch-off functionality rather than auto-retry modes found in other family members. Ensure compatibility with the required DFN-12 footprint and thermal management requirements for the intended application environment.

Selection Notes

Select this component for applications requiring precise latch-off behavior following fault events, necessitating an external reset signal. Compare against the LT4363-2 variant if automatic retry capabilities are preferred over manual intervention. Evaluate the DFN-12 package constraints against available PCB space and verify that the 80VDC survival rating aligns with maximum system transient specifications.

Part Context

This part belongs to the LT4363 series of high voltage surge stoppers designed to protect sensitive circuitry from input power line disturbances. The series offers integrated solutions combining surge suppression and current limiting in compact packages. The -1 suffix specifically denotes the latch-off configuration, distinguishing it from variants with different recovery behaviors within the same product family.

Replacement Considerations

LT4363CDE-1#PBF (Differing package type: DFN-12 vs DFN-12, check thermal pad)

FAQ

How does the LT4363IDE-1 handle persistent overvoltage faults?

The device latches off completely when a sustained overvoltage condition occurs. Recovery requires pulling the SHDN pin low for at least 100μs to reset the internal logic.

What is the maximum transient voltage the LT4363IDE-1 can survive?

The component is rated to survive transient voltages up to 250V, while maintaining an operating DC input range up to 80V.