LT4363CDE-2#TRPBF

Overview

The LT4363CDE-2#TRPBF is a high voltage surge stopper with current limit manufactured by Analog Devices Inc. It operates within an input supply range of 4 VDC to 80 VDC and features a DFN-12 surface-mount package measuring 4 mm in length, 3 mm in width, and 0.75 mm in height. The device supports a maximum operating temperature of +70°C and includes automatic retry functionality for overvoltage conditions below 1.275V. Designed for automotive, avionics, and industrial applications, it protects downstream circuits from transient surges up to 250V while limiting output voltage during sustained faults.

Feature Summary

• Provides board-level protection against high voltage transients and sustained overvoltage events
• Integrates current limiting to protect external MOSFETs from output overloads
• Features automatic retry mechanism that re-enables the switch after cool-down delays
• Supports operation in harsh environments typical of automotive and industrial systems

Applications

• Automotive power distribution systems
• Avionics equipment power inputs
• Industrial control panel protection

Procurement Notes

Verify the specific suffix TRPBF indicates tape and reel packaging when sourcing components. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the DFN-12 footprint matches the design layout requirements. Cross-reference the part number with the latest datasheet revision to confirm pinout consistency and electrical specifications.

Selection Notes

Select this component for applications requiring robust protection against high voltage spikes up to 80V DC input. The automatic retry feature distinguishes it from latching variants, making it suitable for systems needing self-recovery without manual intervention. Consider the thermal performance and package size constraints when designing the PCB layout for optimal heat dissipation and space efficiency.

Part Context

This part belongs to the LT4363 series of high voltage surge stoppers. It shares functional similarities with other variants like the LT4363IDE-2 but differs in package type and temperature rating. The CDE suffix denotes the commercial grade temperature range and DFN-12 package, distinguishing it from industrial or military grade options within the same product family.

Replacement Considerations

LT4363CDE-2#PBF serves as a tube-packaged equivalent with identical electrical characteristics.