LTC4380CMS-1#PBF

Surge Suppression ICS Overview

The LTC4380CMS-1#PBF is a low quiescent current surge stopper manufactured by Analog Devices Inc. It protects loads from high voltage transients by clamping the gate voltage of an external N-channel MOSFET. The device features a fixed internal gate clamp voltage selectable for 12V systems, with a maximum system voltage rating of 72 VDC. It operates within a supply voltage range of 4 VDC to 72 VDC and draws a typical operating current of 8 µA. The component is housed in a 10-pin MSOP package and supports surface mount installation.

Surge Suppression ICS Feature Summary

• Clamps external N-channel MOSFET gate voltage to limit output during overvoltage events
• Provides overcurrent protection via internal multiplier generating TMR pin current proportional to VDS and ID
• GATE pin drives back-to-back MOSFETs for reverse input protection without Schottky diode voltage drop
• ON pin comparator monitors input supply for undervoltage conditions and functions as shutdown control

Surge Suppression ICS Applications

• Automotive load dump protection
• Avionics power distribution
• Industrial surge suppression
• Battery powered system high-side switching

Surge Suppression ICS Procurement Notes

Verify the specific suffix designation against official Analog Devices documentation to confirm the fixed 12V gate clamp configuration. Ensure the selected variant matches the required system voltage architecture. Confirm RoHS compliance status through the manufacturer's latest datasheet or product change notifications prior to finalizing procurement specifications.

Surge Suppression ICS Selection Notes

Select this component when a fixed 12V gate clamp threshold is appropriate for the target application. Consider adjustable variants if the system voltage exceeds standard 12V configurations or requires custom clamping levels. Evaluate the external N-channel MOSFET stress limits against the device's internal fault timer capabilities to ensure adequate protection margins for both overvoltage and overcurrent scenarios.

Surge Suppression ICS Part Context

This part belongs to the LTC4380 family of low quiescent current surge stoppers designed for protecting sensitive electronics from transient voltage spikes. The series offers configurable options including fixed and adjustable gate clamp voltages, catering to diverse automotive, avionics, and industrial power management requirements while maintaining minimal standby current consumption.

Surge Suppression ICS Replacement Considerations

LTC4380HDD-1#PBF

Surge Suppression ICS FAQ

How does the LTC4380CMS-1#PBF handle reverse input protection?

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

What is the function of the ON pin on this device?

The ON pin acts as an accurate comparator to monitor the input supply for undervoltage conditions and can also serve as a shutdown input to reduce static current.