LTC4380HDD-1#PBF

Surge Suppression ICS Overview

The LTC4380HDD-1#PBF is a low quiescent current surge stopper designed to protect loads from high voltage transients. It operates within an input voltage range of 4V to 72V and features a fixed gate clamp voltage suitable for 12V systems. The device draws a typical operating current of 12µA, enabling use in always-on and battery-powered applications. Packaged in a DFN-10 surface-mount case measuring 3mm x 3mm with a height of 0.75mm, it supports an extended 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 transients such as automotive load dump.
• Integrates an internal multiplier that generates a TMR pin current proportional to VDS and ID, limiting operating time in overcurrent and overvoltage conditions according to MOSFET stress limits.
• Enables reverse input protection by driving back-to-back MOSFETs via the GATE pin, eliminating the voltage drop and power dissipation associated with Schottky diode solutions.

Surge Suppression ICS Applications

• Automotive electronics requiring protection against load dump events
• Avionics systems needing reliable transient suppression
• Industrial equipment demanding robust board mount surge protection

Surge Suppression ICS Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm package integrity and lead-free status upon receipt. Cross-reference the full part number including suffixes to ensure exact functional match. Review the latest datasheet for any product change notifications affecting specifications or pinout configurations before final integration.

Surge Suppression ICS Selection Notes

Select this variant when a fixed 12V system gate clamp is required rather than adjustable options. Ensure the external MOSFET selection aligns with the internal TMR multiplier characteristics for proper stress limiting. Verify that the 12µA quiescent current meets the standby power requirements of the specific application design.

Surge Suppression ICS Part Context

This component belongs to the LTC4380 series of low quiescent current surge stoppers manufactured by Analog Devices. The series offers various package options and clamp voltage configurations to suit different system voltages. The HDD suffix indicates a specific DFN-10 package variant optimized for space-constrained designs.

Surge Suppression ICS Replacement Considerations

Compatible substitutes include other LTC4380 variants with different clamp settings or packages, such as LTC4380HDD-3#TRPBF for adjustable clamp functionality. Direct replacements must maintain the same DFN-10 footprint and electrical characteristics for seamless integration.