LTC4380CDD-4#PBF

Surge Suppression ICS Overview

The LTC4380CDD-4#PBF is a low quiescent current surge stopper manufactured by Analog Devices Inc. Designed for board mount applications, it operates within a voltage range of 4 VDC to 72 VDC and features an SMD/SMT termination type in an MSOP-10 package. The device draws a typical operating current of 12 uA and supports a minimum operating temperature of -40 C with a maximum of +85 C. It functions as a surge suppressor suitable for automotive, avionics, and industrial environments.

Surge Suppression ICS Feature Summary

• Provides overvoltage protection by clamping the gate voltage of an external N-channel MOSFET during transient events such as load dump.
• Includes adjustable fault timer functionality that limits conduction time based on MOSFET stress during overcurrent or overvoltage conditions.
• Enables reverse input protection through GATE pin drive capability for back-to-back MOSFET configurations without Schottky diode losses.

Surge Suppression ICS Applications

• Automotive load dump protection
• Avionics power bus protection
• Industrial system surge suppression

Surge Suppression ICS Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and tube packaging when sourcing. Confirm the -4# designation matches the required fixed clamp voltage for your 12V or 24V/28V system architecture. Ensure the MSOP-10 footprint aligns with your PCB layout constraints. Cross-reference the datasheet revision date to ensure compatibility with your design specifications.

Surge Suppression ICS Selection Notes

Select this component for high-voltage systems up to 72V requiring minimal standby current consumption. The fixed clamp voltage options simplify design for standard 12V and 24V/28V automotive architectures compared to adjustable variants. Consider the thermal performance of the external MOSFET as the device limits current based on device stress rather than absolute current thresholds alone.

Surge Suppression ICS Part Context

This part belongs to the LTC4380 series of low quiescent current surge stoppers from Analog Devices. The series is engineered to protect sensitive loads from high-voltage transients while maintaining very low power consumption, making it suitable for always-on and battery-powered applications where efficiency is critical.

Surge Suppression ICS Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing designs before considering alternative surge protection ICs from other manufacturers.