LTC4380HDD-3#PBF

Surge Suppression ICS Overview

The LTC4380HDD-3#PBF is a low quiescent current surge stopper designed to protect loads from high voltage transients. It operates within a voltage range of 4 V to 72 V and features an 8 µA operating current, making it suitable for always-on and battery-powered applications. The device is housed in a DFN-10 package with SMD/SMT termination. It supports an operating temperature range from -40°C to +125°C.

Surge Suppression ICS Feature Summary

• Provides overvoltage protection by clamping the gate voltage of an external N-channel MOSFET to limit output voltage during events such as automotive load dump.
• Includes overcurrent protection via an internal multiplier that generates a TMR pin current proportional to VDS and ID, limiting operating time based on MOSFET stress.
• Supports reverse input protection by driving back-to-back MOSFETs through the GATE pin, eliminating the voltage drop associated with Schottky diode solutions.

Surge Suppression ICS Applications

• Automotive systems requiring protection against load dump conditions
• Avionics equipment needing reliable transient suppression
• Industrial applications utilizing always-on or battery-powered circuits

Surge Suppression ICS Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm the specific suffix matches the required fixed gate clamp voltage configuration. Ensure storage and handling comply with moisture sensitivity level requirements specified in the datasheet to maintain device integrity prior to assembly.

Surge Suppression ICS Selection Notes

Select this part when a low quiescent current solution is required for systems up to 72 V. Choose the adjustable gate clamp version for flexible voltage thresholds across various system voltages. Consider the DFN-10 package size for space-constrained designs requiring surface mount integration.

Surge Suppression ICS Part Context

This component belongs to the LTC4380 series of board mount surge protectors manufactured by Analog Devices. It is categorized under circuit protection devices specifically designed for surge suppression. The series offers various packages and clamp configurations to address different industrial and automotive power distribution needs.

Surge Suppression ICS Replacement Considerations

LTC4380HDD-1#PBF

Surge Suppression ICS FAQ

How does the LTC4380HDD-3#PBF handle reverse polarity?

The GATE pin can drive back-to-back MOSFETs to provide reverse input protection, which eliminates the voltage drop and dissipation typically found in Schottky diode solutions.

What is the purpose of the TMR pin?

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