LT4363MPMS-1#PBF

Overview

The LT4363MPMS-1#PBF is a high-voltage surge stopper with current limit, manufactured by Analog Devices Inc. It operates within an input voltage range of 4 VDC to 80 VDC and features a maximum quiescent current of 1.2 mA. The device is housed in a compact MSOP-12 surface-mount package, measuring 4 mm in length, 3 mm in width, and 0.86 mm in height. Designed for robust performance, it supports an extended operating temperature range from -55°C to +125°C. This component provides board-level protection against transient overvoltage and overcurrent conditions.

Feature Summary

• Integrates high-voltage surge stopping capability with internal current limiting to protect downstream circuitry from power line transients.
• Features latch-off behavior after fault detection, requiring a specific shutdown signal sequence to reset the device.
• Utilizes a low-profile MSOP-12 surface-mount package suitable for space-constrained automotive and industrial applications.

Applications

• Automotive electronic systems
• Avionics power distribution
• Industrial control boards

Procurement Notes

Verify the exact suffix and package type when sourcing, as the LT4363 series includes variants with different thermal grades and pin configurations. Confirm availability status directly with authorized distributors, as supply constraints may affect lead times. Ensure that the selected variant matches the required operating temperature range and latch-off/reset functionality specifications for the target application design.

Selection Notes

Select this component for applications requiring protection against high-voltage transients up to 80V DC. The MPMS variant is chosen for its military-grade temperature range (-55°C to +125°C) compared to commercial alternatives. Consider the latch-off reset mechanism when designing the control logic, as it differs from auto-retry variants in the same family. Ensure the PCB footprint matches the MSOP-12 dimensions provided in the datasheet.

Part Context

The LT4363MPMS-1#PBF belongs to the LT4363 family of high-voltage surge stoppers. It is specifically the MSOP-12 packaged version with an extended industrial/military temperature rating. This part serves as a board-mount protector, distinct from integrated solutions like the LTC4381 which include internal MOSFETs. It complements other Analog Devices power management components by providing discrete transient suppression.

Replacement Considerations

LT4363HMS-1#PBF offers similar electrical characteristics but with a commercial temperature range (-40°C to +125°C). LT4363CDE-1#PBF and LT4363IDE-1#PBF provide DFN-12 packaging options for different board layout requirements. Verify temperature ratings and package dimensions before substituting.