LTC4368IDD-2#PBF

Surge Suppression ICS Overview

The LTC4368IDD-2#PBF is a board mount surge protector manufactured by Analog Devices Inc. It functions as an overvoltage, undervoltage, and reverse protection controller with bidirectional current capabilities. The device operates within a voltage rating of 2.5 VDC to 60 VDC and supports a supply current of 100 uA. It is housed in a compact DFN-10 package measuring 3 mm x 3 mm with a height of 0.75 mm. The component is designed for surface mount installation and operates reliably across a temperature range from -40°C to +85°C.

Surge Suppression ICS Feature Summary

• Provides integrated protection against input voltage anomalies including overvoltage, undervoltage, and reverse polarity conditions.
• Supports bidirectional current flow, enabling protection for both power input and output lines.
• Utilizes a floating topology architecture that allows the controller to operate above the protected rail voltage.

Surge Suppression ICS Applications

• Automotive electronic systems requiring robust power line protection
• Industrial equipment power distribution networks
• Energy storage system interfaces
• Portable instrumentation power inputs

Surge Suppression ICS Procurement Notes

Verify availability status directly with authorized distributors or the manufacturer, as this specific part number may be subject to limited supply or discontinuation. Confirm the exact ordering suffix matches the required package and temperature grade. Ensure compliance with RoHS directives and check for any recent product change notices that might affect pin compatibility or electrical specifications before finalizing procurement plans.

Surge Suppression ICS Selection Notes

Select this component when designing circuits requiring protection against transient voltage spikes and reverse connections within the 60V DC limit. The bidirectional feature makes it suitable for applications where power flow direction may vary or needs monitoring. Consider the external N-channel MOSFET requirement for handling load currents, as the IC controls the gate rather than conducting the main current itself. Evaluate the thermal performance of the external switch based on the expected fault energy dissipation.

Surge Suppression ICS Part Context

This component belongs to the LTC4368 series of Surge Stoppers, which are designed to protect sensitive downstream electronics from abusive power supply conditions. Unlike traditional fuses or TVS diodes, these controllers actively manage the power path using external switches, offering adjustable thresholds and retry mechanisms. The IDD-2 suffix typically denotes a specific version within the family, often featuring automatic retry functionality after fault clearance.

Surge Suppression ICS Replacement Considerations

Direct replacements include other variants within the LTC4368 family such as the LTC4368HDD-2#PBF, which shares similar functional characteristics but may differ in package type or specific electrical ratings. Verify that any substitute maintains the same bidirectional protection capability and voltage range. Cross-reference datasheets to ensure pinout compatibility and control logic alignment with the existing design.

Surge Suppression ICS FAQ

Does the LTC4368IDD-2#PBF support bidirectional current?

Yes, the device is designed to handle bidirectional current, allowing it to protect both input and output power paths effectively.

What types of faults does this controller protect against?

It protects against overvoltage, undervoltage, reverse polarity, and reverse overcurrent conditions.