LT4363HMS-2#PBF

Overview

The LT4363HMS-2#PBF is a high-voltage surge stopper with current limit, manufactured by Analog Devices Inc. It operates within a voltage range of 4 VDC to 80 VDC and features an MSOP-12 surface-mount package. The device supports a minimum operating temperature of -55°C and a maximum of +125°C. Designed for board mount applications, it provides robust protection against overvoltage and overcurrent conditions in demanding environments.

Feature Summary

• Provides automatic retry functionality after fault conditions cool down, unlike latch-off variants.
• Integrates current limiting to protect the MOSFET from output overloads.
• Inhibits retry if input overvoltage exceeds specific thresholds to prevent repeated stress.

Applications

• Automotive systems requiring high-voltage surge protection
• Avionics equipment needing reliable power rail management
• Industrial control systems exposed to transient voltage events

Procurement Notes

Verify component authenticity through authorized Analog Devices channels or certified distributors. Confirm the MSOP-12 package marking matches official datasheet specifications. Check for recent Product Change Notifications (PCN) regarding manufacturing site or material updates. Ensure storage conditions comply with moisture sensitivity levels for lead-free packages prior to assembly.

Selection Notes

Select this variant specifically when automatic recovery after thermal shutdown is required, distinguishing it from the LT4363-1 which latches off. Consider the MSOP-12 footprint constraints versus the HS-16 SOIC option. Evaluate the -55°C lower temperature limit against system requirements compared to standard commercial grade parts. Verify that the 80VDC input rating aligns with the specific bus voltage architecture.

Part Context

This component belongs to the LT4363 series of high-voltage surge stoppers. It complements other variants like the LT4363HS-2#PBF and LT4363MPMS-2#PBF, offering different package options and temperature ranges. The series is designed to replace fuses and diodes in power distribution networks, providing active protection rather than passive clamping.

Replacement Considerations

LT4363HS-2#PBF offers similar functionality but in an SOIC-16 package with a wider commercial temperature range (-40°C to +125°C). LT4363MPMS-2#PBF provides the same automatic retry feature in an MSOP-12 package but may have different qualification standards. Direct pin-to-pin substitution requires verifying temperature range and package dimensions.