LT4363HDE-2#PBF

Overview

The LT4363HDE-2#PBF is a high-efficiency switching surge stopper manufactured by Analog Devices Inc., designed for board-mount protection in automotive, avionics, and industrial applications. It operates within an input supply range of 4 VDC to 80 VDC and features a SOIC-16 surface-mount package with SMD/SMT termination. The device limits output voltage during overvoltage events and provides current limiting to protect downstream MOSFETs from overloads. It includes a timer delay that turns off the controller under sustained fault conditions, ensuring robust system integrity against electrical transients.

Feature Summary

• Switching topology for high efficiency during surge events
• Integrated current limiting to protect external MOSFETs
• Automatic retry mechanism after cool-down delay
• Sustained fault detection with timer-based shutdown

Applications

• Automotive power systems
• Avionics equipment
• Industrial control circuits

Procurement Notes

Verify the specific suffix DE indicates the SOIC-16 package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure compatibility with the required operating temperature range for the target environment. Cross-reference the datasheet revision to confirm pinout and electrical characteristics match the design requirements exactly.

Selection Notes

Select this component for applications requiring high-voltage surge protection with efficient switching regulation. The -2 suffix denotes automatic retry functionality, which is suitable for non-latching fault scenarios. Consider the SOIC-16 package dimensions for PCB layout constraints. Evaluate the thermal performance within the specified operating temperature range to ensure reliable operation under continuous load conditions.

Part Context

This part belongs to the LT4363 series of high-voltage surge stoppers from Analog Devices. The series offers various package options including DFN, MSOP, and SOIC variants to suit different space and thermal requirements. The LT4363 family is engineered to replace traditional diode OR-ing solutions, providing superior efficiency and lower voltage drop during normal operation while maintaining robust protection against input surges and reverse polarity.

Replacement Considerations

LT4363IDE-2#PBF

FAQ

How does the LT4363HDE-2 handle sustained overvoltage conditions?

The device turns off after a timer delay when sustained overvoltage or overcurrent conditions are detected.

What is the retry behavior of the LT4363HDE-2#PBF?

It automatically retries after a cool-down delay, provided the overvoltage level is not higher than 1.275V.