LTC4381ADKE-2#PBF

Current Regulation/Management Overview

The LTC4381ADKE-2#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 functions as a low quiescent current eFuse with an operating temperature range from -40°C to +125°C. It utilizes a DFN-32 package measuring 7 mm in length, 5 mm in width, and 0.75 mm in height. The component features SMD/SMT termination and is designed for PCB mount installation.

Current Regulation/Management Feature Summary

• Provides board-level surge protection against high-voltage transients
• Operates as a low quiescent current electronic fuse
• Supports wide input voltage ranges up to 72 V

Current Regulation/Management Applications

• Automotive systems
• Avionics equipment
• Industrial applications

Current Regulation/Management Procurement Notes

Verify the specific suffix #PBF confirms lead-free compliance and tube packaging. Confirm the ADKE-2 variant matches the required 500 mA current rating and extended temperature specifications. Ensure the DFN-32 footprint aligns with the target PCB layout. Check for any recent discontinuance notifications or lifecycle status changes directly from Analog Devices documentation before finalizing procurement plans.

Current Regulation/Management Selection Notes

Select this component when designing circuits requiring robust overvoltage protection for sensitive downstream loads. The wide input voltage capability suits automotive and industrial power buses. The low quiescent current characteristic makes it suitable for battery-powered or efficiency-critical applications. Ensure the thermal management strategy accommodates the DFN-32 package's heat dissipation requirements under fault conditions.

Current Regulation/Management Part Context

This part belongs to the LTC4381 series of current surge stoppers. It is functionally related to other variants such as LTC4381ADKE-1#PBF and LTC4381IDKE-2#PBF, which share similar surge suppression capabilities but may differ in temperature grades or specific electrical characteristics. The series is designed to protect boards from catastrophic damage caused by hot-plugging or transient voltage events.

Current Regulation/Management Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.