LT4363CMS-2#PBF

Overview

The LT4363CMS-2#PBF is a board-mount surge stopper manufactured by Analog Devices Inc. It operates within an input supply range of 5.7V to 31.6V DC and supports survival voltages up to 80V DC, with transient tolerance reaching 250V. The device features current limiting capabilities rated at 2.0A typical and 2.5A maximum, protecting downstream components from overloads. It utilizes an MSOP-12 surface-mount package measuring 4mm in length, 3mm in width, and 0.86mm in height. The component functions across a temperature range of -55°C to +125°C.

Feature Summary

• Provides automatic retry functionality after fault conditions cool down, distinguishing it from latch-off variants.
• Integrates high-voltage surge suppression with precise current limiting to protect MOSFETs from output overloads.
• Includes a shutdown pin that allows for system reset or inhibition of retry operations during sustained overvoltage.

Applications

• Automotive power distribution systems requiring robust transient protection
• Avionics equipment needing reliable high-voltage surge handling
• Industrial control circuits susceptible to line transients

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm the exact functional variant, as part numbers within this series differ by latch versus retry behavior. Ensure the MSOP-12 package dimensions align with your PCB footprint constraints. Cross-reference the thermal performance data in the datasheet against your expected operating environment to guarantee reliability under load.

Selection Notes

Select this component when automatic recovery from temporary faults is required rather than manual intervention. Compare the 80VDC survival rating against potential system transients to ensure adequate headroom. Evaluate the 125°C maximum junction temperature capability against ambient conditions. Consider the MSOP-12 form factor for space-constrained designs requiring integrated surge and current protection.

Part Context

This part belongs to the LT4363 family of high-voltage surge stoppers designed for protecting sensitive electronics from input voltage spikes. Unlike standard TVS diodes, these devices actively manage power flow using external MOSFETs. The CMS-2 suffix indicates a specific operational mode focused on automatic recovery, offering a distinct alternative to the LT4363-1 which latches off upon fault detection.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing design files before considering any cross-brand alternatives.