LT4363IDE-1#PBF

Overview

The LT4363IDE-1#PBF is a board-mount surge protector manufactured by Analog Devices Inc. It functions as a high-voltage surge stopper with integrated current limiting capabilities. The device utilizes an internal N-channel MOSFET to protect downstream circuitry from input voltage transients and overcurrent conditions. Designed for robust operation, it supports an input supply operating range of 5.7V to 31.6V DC. The component features a survival rating of up to 80V DC and can withstand transient voltages of up to 250V. In standard configuration, it limits output voltage to approximately 16.3V during overvoltage events. The part is housed in a surface-mount package suitable for automated assembly.

Feature Summary

• Integrates an internal N-channel MOSFET for low-resistance power path control
• Provides automatic current limiting to protect against output overload conditions
• Features latch-off behavior upon fault detection requiring explicit reset via shutdown pin
• Capable of surviving significant input voltage transients without damage

Applications

• Protection of sensitive electronics in automotive systems
• Surge suppression in avionics power distribution networks
• Overvoltage protection in industrial control equipment

Procurement Notes

Verify the specific suffix and package variant against the official datasheet to ensure compatibility with the target design requirements. Confirm that the latch-off reset mechanism aligns with the system's fault recovery strategy. Check for any restricted availability status or lead time variations directly with authorized distributors prior to finalizing procurement plans.

Selection Notes

Select this component when a reliable latch-off response is required following a fault event, distinguishing it from auto-retry variants. Ensure the application environment accommodates the necessary shutdown signal timing for resetting the device after a triggered fault condition. Evaluate the thermal performance and current limiting thresholds to guarantee adequate protection margins for the protected load under worst-case transient scenarios.

Part Context

This part belongs to the LT4363 series of high-voltage surge stoppers designed by Analog Devices. The series offers various configurations including auto-retry and latch-off options to suit different system resilience requirements. The IDE-1 designation indicates a specific package and temperature grade variant within the broader product family, tailored for board-mount applications requiring robust transient protection.

Replacement Considerations

LT4363IDE-2#PBF serves as a functional substitute offering auto-retry behavior instead of latch-off. LT4363HMS-1#PBF provides similar latch-off functionality but may differ in package dimensions or thermal characteristics. Verify electrical parameter equivalence and mechanical fit before substituting.