LTC4357HDCB#TRPBF

OR Controllers, Ideal Diodes Overview

The LTC4357HDCB#TRPBF is a positive high voltage ideal diode controller manufactured by Analog Devices Inc. It operates within an input voltage range of 9V to 80V and is housed in a 6-lead DFN package. The device drives an external N-channel MOSFET to replace standard diodes, reducing power consumption and heat dissipation. Key electrical characteristics include a maximum operating temperature of 125°C and a minimum operating temperature of -55°C. The component features a 0.5µs turn-off time to limit peak fault current and ensures smooth switchover without oscillation.

OR Controllers, Ideal Diodes Feature Summary

• Drives external N-channel MOSFET to replace Schottky diodes for improved efficiency
• Limits peak fault current with fast 0.5µs turn-off time
• Ensures smooth switchover between power sources without oscillation
• Prevents reverse DC current flow through the controlled path

OR Controllers, Ideal Diodes Applications

• N + 1 redundant power supplies
• High availability systems
• AdvancedTCA systems
• Telecom infrastructure
• Automotive systems

OR Controllers, Ideal Diodes Procurement Notes

Verify the specific suffix HDCB corresponds to the 6-lead DFN package configuration when sourcing. Confirm RoHS compliance status as indicated in official documentation. Ensure the supply chain source provides valid manufacturer traceability. Check for any specific handling requirements related to moisture sensitivity level 1. Validate that the ordering part number matches the exact pinout and thermal pad specifications required by the design.

OR Controllers, Ideal Diodes Selection Notes

Select this controller when designing high-voltage OR-ing applications requiring low forward voltage drop. It is suitable for systems where minimizing power loss across the diode path is critical. Consider the external MOSFET selection carefully to match the controller's drive capabilities. Evaluate the thermal performance of the external FET against the system's heat dissipation constraints. Ensure the input voltage range aligns with the 9V to 80V operational window of the device.

OR Controllers, Ideal Diodes Part Context

This component belongs to the LTC4357 series of ideal diode controllers from Analog Devices. The series includes variants such as the LTC4357MPMS8#PBF and LTC4357HMS8#PBF, which offer similar functionality but in different packages like MSOP-8. The HDCB suffix specifically denotes the 6-lead DFN package variant, distinguishing it from other form factors within the same functional family designed for high-voltage power management.

OR Controllers, Ideal Diodes Replacement Considerations

LTC4357HDCB#PBF