LTC4380CDD-1#PBF

Surge Suppression ICS Overview

The LTC4380CDD-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, limiting output voltage during overvoltage events such as automotive load dumps. The device features a fixed internal gate clamp voltage selectable for 12V and 24V/28V systems, supporting input voltages up to 72V. It includes overcurrent protection with a fault timer and reverse input protection via back-to-back MOSFET drive. The component operates within a temperature range of -40°C to +85°C and is housed in a DFN-10 package.

Surge Suppression ICS Feature Summary

• Clamps external N-channel MOSFET gate voltage to limit output during overvoltage transients
• Provides overcurrent protection using an internal multiplier proportional to VDS and ID
• Drives back-to-back MOSFETs for reverse input protection without Schottky diode voltage drop
• Features adjustable ON threshold comparator for undervoltage monitoring or shutdown control

Surge Suppression ICS Applications

• Automotive, avionics, and industrial surge protection
• Hot swap and hot insertion applications
• High-side switching for battery-powered systems
• Intrinsically safe applications

Surge Suppression ICS Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or direct channels. Confirm that the specific suffix #PBF indicates lead-free packaging compliant with RoHS standards. Ensure the DFN-10 package matches the target PCB footprint and thermal requirements. Cross-reference the datasheet revision date to ensure compatibility with current design specifications and manufacturing processes.

Surge Suppression ICS Selection Notes

Select this part when a fixed gate clamp voltage suitable for 12V or 24V/28V systems is required. Choose the CDD-1 variant specifically for its fixed clamp configuration rather than the adjustable IDD-2 version. Consider the low 8µA operating current for always-on battery applications. Verify that the external MOSFET selection aligns with the device's stress-limiting capabilities and voltage ratings.

Surge Suppression ICS Part Context

The LTC4380 series comprises low quiescent current surge stoppers designed for robust power path management. This specific model belongs to the family offering fixed gate clamp options, distinguishing it from adjustable variants like the LTC4380IDD-2. It serves as a critical interface between power sources and sensitive loads, replacing traditional diode-based solutions to minimize power loss and voltage drop in high-reliability environments.

Surge Suppression ICS Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should consult official Analog Devices resources for potential cross-references or updated product line replacements.