LTC4381ADKE-1#PBF

Current Regulation/Management Overview

The LTC4381ADKE-1#PBF is a board-mount surge stopper manufactured by Analog Devices Inc. It operates within a voltage range of 4 V to 72 V and supports a current rating of 500 mA. The device utilizes a DFN-32 package with dimensions of 7 mm length, 5 mm width, and 0.75 mm height. It features SMD/SMT termination and is designed for PCB mount installation. The component functions as a low quiescent current eFuse, suitable for environments ranging from -40°C to +125°C.

Current Regulation/Management Feature Summary

• Provides board-level protection against high voltage transients and overcurrent events
• Integrates low quiescent current operation for efficient power management in always-on applications
• Supports bidirectional buffering and hot swap capabilities for live backplane insertion

Current Regulation/Management Applications

• Protection of loads from high voltage transients in automotive systems
• Surge suppression for battery-powered and always-on electronic circuits
• Hot swappable I/O card insertion into live backplanes without data corruption

Current Regulation/Management Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and tube packaging configuration. Confirm the DFN-32 package dimensions match your PCB footprint requirements. Check moisture sensitivity levels and reflow soldering profiles against your manufacturing standards. Ensure the 4V to 72V input range aligns with your system's operational voltage specifications.

Current Regulation/Management Selection Notes

Select this component when designing circuits requiring robust surge protection with minimal standby current consumption. The wide operating temperature range makes it suitable for industrial and automotive environments. Consider the DFN-32 package size for space-constrained layouts. Verify that the 500 mA current rating meets the load requirements of the protected circuit branch.

Current Regulation/Management Part Context

This part belongs to the LTC4381 series of current surge stoppers from Analog Devices. It is functionally related to other variants such as the LTC4381ADKE-2#PBF and LTC4381ADKE-4#PBF, which share similar protective functionalities but may differ in specific clamp voltages or internal configurations. The series is designed for high-reliability applications requiring precise transient handling.

Current Regulation/Management Replacement Considerations

Direct substitutes include LTC4381ADKE-2#PBF and LTC4381ADKE-4#PBF. These parts share the same DFN-32 package and general surge stopping functionality. Verify if the specific internal clamp settings or latch-off thresholds of the replacement variant match the original design requirements.