LTC4381CDKE-4#TRPBF

Overview

The LTC4381CDKE-4#TRPBF is a low quiescent current eFuse and surge stopper manufactured by Analog Devices Inc. It operates within an input voltage range of 4V to 80V and supports continuous output currents up to 500mA. The device utilizes a DFN-32 package with dimensions of 7mm x 5mm x 0.75mm. It functions effectively across a temperature range from -40°C to +125°C, providing robust protection for board-mounted applications.

Feature Summary

• Integrates low on-resistance MOSFET for efficient power delivery
• Provides comprehensive overcurrent and thermal protection mechanisms
• Features low quiescent current operation for energy efficiency

Applications

• Hot swap bus protection
• Surge suppression in industrial systems
• Power distribution unit inputs

Procurement Notes

Verify component authenticity through authorized channels due to potential supply constraints. Confirm RoHS compliance status prior to integration. Ensure storage conditions account for moisture sensitivity classification. Validate package markings against official datasheet specifications to prevent counterfeit risks during procurement.

Selection Notes

Select this component when high voltage tolerance up to 80V is required alongside precise current limiting capabilities. Consider the DFN-32 footprint for space-constrained designs requiring thermal performance. Evaluate the specific suffix requirements against application voltage and current needs to ensure optimal protection thresholds are met.

Part Context

This part belongs to the LTC4381 series of low quiescent current eFuses. It serves as a critical protection element in modern electronic systems, replacing traditional fuses and discrete protection circuits. The series offers integrated solutions for managing transient events and steady-state faults in power distribution networks.

Replacement Considerations

LTC4381ADKE-4#TRPBF