LTC4357CDCB#TRMPBF

OR Controllers, Ideal Diodes Overview

The LTC4357CDCB#TRMPBF 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 features a DFN-6 package. The device supports surface mount installation with a working temperature range from -40°C to +125°C. Key electrical parameters include a maximum output current of 80µA, an input current of 350µA, and a quiescent operating power supply current of 500µA.

OR Controllers, Ideal Diodes Feature Summary

• Drives external N-channel MOSFETs to replace Schottky diodes for reduced power consumption
• Provides smooth switchover between power sources without oscillation
• Limits peak fault current through fast turn-off time capabilities

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 TRMPBF indicates reel, cut tape, or MouseReel packaging options available from authorized distributors. Confirm RoHS compliance status and lead times directly with suppliers as stock levels fluctuate. Ensure the DFN-6 footprint matches your PCB design requirements before finalizing procurement orders.

OR Controllers, Ideal Diodes Selection Notes

Select this component when designing high-voltage OR-ing applications requiring low reverse DC current. The wide 9V to 80V operating range suits telecom and automotive environments. Consider the DFN-6 package size for compact layouts where thermal dissipation via the exposed pad is manageable.

OR Controllers, Ideal Diodes Part Context

This part belongs to the LTC4357 series of ideal diode controllers. It serves as a specialized PMIC solution for replacing traditional diode-based OR-ing circuits. The series includes variants like the LTC4357HMS8 in MSOP packages, offering flexibility in form factor while maintaining consistent control logic for high-voltage power management tasks.

OR Controllers, Ideal Diodes Replacement Considerations

LTC4357HDCB#TRPBF

OR Controllers, Ideal Diodes FAQ

Does the LTC4357 prevent reverse DC current flow?

Yes, the controller eliminates reverse DC current by driving the external MOSFET gate to block conduction when the source voltage drops below the load.

What is the typical turn-off time for limiting fault currents?

The device features a 0.5µs turn-off time to effectively limit peak fault currents during short-circuit events.