LTC4380IMS-4#PBF

Overview

The LTC4380IMS-4#PBF is a board mount surge stopper manufactured by Analog Devices Inc. It operates within a voltage range of 4 VDC to 72 VDC and features an SMD/SMT package in MSOP-10 format with dimensions of 3 mm x 3 mm x 0.86 mm. The device draws a quiescent current of 12 uA and functions reliably between -40 C and +85 C. Designed for automotive, avionics, and industrial applications, it provides robust protection against high voltage transients.

Feature Summary

• Clamps gate voltage of external N-channel MOSFET to limit output during overvoltage events like load dump
• Provides reverse input protection via back-to-back MOSFET drive eliminating Schottky diode losses
• Includes internal multiplier for overcurrent protection based on MOSFET stress limits

Applications

• Automotive load dump protection
• Avionics transient suppression
• Industrial system surge protection

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and standard tube packaging when sourcing. Confirm the IMS-4 designation corresponds to the fixed clamp voltage variant suitable for your system requirements. Check current availability status as distribution may vary by region. Ensure the MSOP-10 footprint matches your PCB layout constraints before finalizing procurement orders.

Selection Notes

Select this component for systems requiring low static current operation in always-on or battery-powered configurations. The fixed clamp voltage option simplifies design for standard 12V or 24V/28V architectures compared to adjustable versions. Consider the MSOP-10 package size for space-constrained board layouts while ensuring adequate thermal management for the external MOSFET.

Part Context

This part belongs to the LTC4380 series of low quiescent current surge stoppers. The series offers configurable gate clamp voltages and integrated overcurrent protection mechanisms. It serves as a critical interface component between power sources and sensitive loads, replacing traditional diode-based solutions to improve efficiency and reduce voltage drops in high-reliability environments.

Replacement Considerations

Consult official substitution guides for compatible variants within the LTC4380 family. Verify pinout compatibility and electrical parameter alignment before swapping components. Ensure any replacement maintains the required operating temperature range and package dimensions for your specific application.