LTC4380CDD-2#PBF

Surge Suppression ICS Overview

The LTC4380CDD-2#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 operates within a voltage range of 4 VDC to 72 VDC and features a fixed internal gate clamp voltage of 50 V, suitable for 24V/28V systems. It incorporates overcurrent protection with a timer based on MOSFET stress. The component utilizes a 10-pin DFN (3 mm x 3 mm) surface-mount package and draws only 8 µA of operating current.

Surge Suppression ICS Feature Summary

• Provides overvoltage protection by clamping external N-channel MOSFET gate voltage during transients
• Includes overcurrent protection with adjustable fault timer based on MOSFET power dissipation
• Enables reverse input protection up to -60 V using back-to-back MOSFET configuration
• Features low static current consumption for battery-powered and always-on applications

Surge Suppression ICS Applications

• Automotive load dump protection
• Industrial system surge suppression
• Avionics power distribution protection
• Hot-swap and hot-insertion interfaces

Surge Suppression ICS Procurement Notes

Verify the specific suffix '#PBF' indicates lead-free tape and reel or tube packaging as per manufacturer standards. Confirm availability status through authorized distributors, as supply may be limited. Ensure the selected variant matches the required 50 V gate clamp specification for the target 24V/28V application environment.

Surge Suppression ICS Selection Notes

Select this component when a fixed 50 V gate clamp is required for 24V/28V systems. Choose the DFN-10 package for compact PCB layouts. Consider the 8 µA quiescent current for energy-sensitive designs. Verify that the external MOSFET can withstand the specified surge voltages and thermal stresses defined in the datasheet.

Surge Suppression ICS Part Context

This part belongs to the LTC4380 family of low quiescent current surge stoppers. It shares core functionality with variants like the LTC4380IDD-2 but differs in package type and specific manufacturing lot characteristics. The CDD suffix denotes the specific DFN-10 package configuration used for board-mount applications.

Surge Suppression ICS Replacement Considerations

Direct substitutes include other LTC4380 variants such as LTC4380IDD-2#PBF or LTC4380IMS-2#WPBF, provided the package footprint and pinout are compatible. Verify that alternative parts maintain the same 50 V fixed gate clamp voltage and electrical specifications.