LTC4380HDD-2#TRPBF

Surge Suppression ICS Overview

The LTC4380HDD-2#TRPBF 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 features a fixed gate clamp voltage suitable for 12V systems, with an input voltage rating ranging from 4 VDC to 72 VDC. It operates within a temperature range of -40°C to +85°C and is housed in a DFN-10 package.

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 internal overcurrent protection utilizing a multiplier that generates a TMR pin current proportional to VDS and ID to limit operating time under stress.
• Supports reverse input protection by driving back-to-back MOSFETs via the GATE pin, eliminating Schottky diode voltage drops.

Surge Suppression ICS Applications

• Automotive systems requiring protection against load dump transients
• Avionics power distribution networks
• Industrial equipment subject to high voltage surges

Surge Suppression ICS Procurement Notes

Verify component authenticity through authorized channels due to limited supply status. Confirm package integrity upon receipt, as surface-mount devices are sensitive to handling damage. Ensure compatibility with external MOSFET selection for optimal clamp performance. Review datasheet specifications for thermal management requirements in enclosed environments.

Surge Suppression ICS Selection Notes

Select this variant specifically for 12V system architectures due to its fixed gate clamp configuration. Evaluate external MOSFET capabilities to ensure they withstand the clamped voltage and current stress limits defined by the internal multiplier. Consider the low quiescent current characteristic for battery-powered or always-on applications where standby power consumption is critical.

Surge Suppression ICS Part Context

This component belongs to the LTC4380 series of surge stoppers designed for board-level protection. It integrates control logic to manage external power switches, offering a compact solution compared to discrete protection circuits. The DFN-10 package facilitates space-constrained PCB layouts while maintaining robust thermal dissipation characteristics for industrial and automotive reliability standards.

Surge Suppression ICS Replacement Considerations

LTC4380HDD-1#TRPBF (24V/28V fixed clamp), LTC4380HDD-3#TRPBF (Adjustable clamp)