LTC4380CMS-3#PBF

Surge Suppression ICS Overview

The LTC4380CMS-3#PBF is a board-mount surge protector manufactured by Analog Devices Inc. It operates within a voltage range of 4 VDC to 72 VDC and features an MSOP-10 surface mount package. The device has a maximum operating temperature of +85°C and a minimum operating temperature of -40°C. It draws a quiescent current of 12 µA during operation. The component is RoHS compliant and utilizes SMD/SMT termination types for circuit board integration.

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 automotive load dump.
• Includes internal overcurrent protection using a multiplier that generates a timer current proportional to drain-source voltage and drain current to limit MOSFET stress.
• Features a GATE pin capable of driving back-to-back MOSFETs to provide reverse input protection without the voltage drop associated with Schottky diodes.

Surge Suppression ICS Applications

• Automotive, avionics, and industrial surge protection
• Hot-swap and live-insertion applications
• High-side switching in battery-powered systems

Surge Suppression ICS Procurement Notes

Verify availability through authorized distributors as supply status may be restricted. Confirm the specific suffix #PBF indicates lead-free packaging compliant with RoHS standards. Ensure the MSOP-10 package dimensions align with PCB layout requirements. Cross-reference the datasheet for thermal management needs given the 85°C maximum operating temperature rating.

Surge Suppression ICS Selection Notes

Select this component when low quiescent current is critical for always-on or battery-operated designs. The fixed clamp voltage options are suitable for standard 12V and 24V/28V system architectures. Consider the MSOP-10 footprint for space-constrained layouts requiring surface mount technology. Validate that the 72V maximum voltage rating covers the peak transient requirements of the target application.

Surge Suppression ICS Part Context

This part belongs to the LTC4380 series of low quiescent current surge stoppers designed to protect loads from high-voltage transients. The series offers configurable gate clamp voltages and integrated overcurrent protection mechanisms. It serves as a robust alternative to discrete protection circuits by combining control logic with MOSFET drive capabilities in a single integrated solution.

Surge Suppression ICS Replacement Considerations

LTC4380IMS-3#PBF: Identical electrical specifications and functionality housed in an MSOP-10 package, offering a direct physical form-factor alternative.

Surge Suppression ICS FAQ

How does the LTC4380CMS-3#PBF handle reverse input polarity?

The GATE pin can drive back-to-back MOSFETs to provide reverse input protection, eliminating the voltage drop and power dissipation typically associated with Schottky diode solutions.

What mechanism limits MOSFET stress during fault conditions?

An internal multiplier generates a TMR pin current proportional to VDS and ID, limiting operating time in both overcurrent and overvoltage conditions according to MOSFET stress limits.