LTC4380HMS-2#PBF

Surge Suppression ICS Overview

The LTC4380HMS-2#PBF is a board mount surge protector from Analog Devices, designed as a low quiescent current surge stopper. It utilizes an MSOP-10 package with SMD/SMT termination and measures 3 mm in length and width, with a height of 0.86 mm. The device operates within a voltage range of 4 VDC to 72 VDC and features a maximum operating current of 20 uA. It supports an extended temperature range from -40°C to +125°C and holds AEC-Q100 qualification for automotive applications.

Surge Suppression ICS Feature Summary

• Provides overvoltage protection by clamping the gate voltage of an external N-channel MOSFET to limit output voltage during transients such as load dump events.
• Includes overcurrent protection using an internal multiplier that generates a TMR pin current proportional to VDS and ID to limit stress duration.
• Features a low quiescent current design suitable for always-on and battery-powered applications.

Surge Suppression ICS Applications

• Automotive systems
• Avionics equipment
• Industrial electronics

Surge Suppression ICS Procurement Notes

Verify the specific suffix against official documentation, as the provided model uses #PBF while source data references #WPBF. Confirm availability status through authorized channels due to restricted supply indications. Ensure the component meets AEC-Q100 requirements if deployed in automotive contexts. Cross-reference the MSOP-10 package dimensions for PCB layout compatibility.

Surge Suppression ICS Selection Notes

Select this component for applications requiring protection against high voltage transients up to 72V. The fixed gate clamp version is appropriate for standard 12V or 24V/28V system architectures. Consider the low operating current for power-sensitive designs. Verify thermal performance within the specified -40°C to +125°C operational range.

Surge Suppression ICS Part Context

This part belongs to the LTC4380 series of surge suppressors manufactured by Analog Devices. It functions as a specialized PMIC for circuit protection rather than power regulation. The series includes adjustable clamp variants for different voltage systems, whereas this specific model provides fixed clamping characteristics.

Surge Suppression ICS Replacement Considerations

LTC4380IMS-2#WPBF

Surge Suppression ICS FAQ

How does the device protect against overvoltage?

It clamps the gate voltage of an external N-channel MOSFET to limit the output voltage to a safe value during overvoltage events.

What is the purpose of the TMR pin?

An internal multiplier generates a current on the TMR pin proportional to VDS and ID to limit operating time during overcurrent and overvoltage conditions according to MOSFET stress.