LTC4359IDCB#WTRPBF

OR Controllers, Ideal Diodes Overview

The LTC4359IDCB#WTRPBF is a positive high voltage ideal diode controller manufactured by Analog Devices Inc. It drives an external N-channel MOSFET to replace Schottky diodes, reducing power dissipation and thermal issues. The device operates within a supply voltage range of 4V to 80V and features reverse input protection down to -40V. It offers low quiescent current of 150µA during operation and 9µA in shutdown mode. The component is housed in a 6-pin DFN EP package (2mm x 3mm) and supports an industrial temperature range from -40°C to +85°C.

OR Controllers, Ideal Diodes Feature Summary

• Drives external N-channel MOSFETs to emulate ideal diode behavior with smooth, non-oscillating switching
• Provides reverse input protection up to -40V to safeguard against power supply faults or shorts
• Features ultra-low shutdown current for efficient power management in standby states

OR Controllers, Ideal Diodes Applications

• Automotive battery protection systems
• Redundant power supply ORing configurations
• Telecommunications infrastructure power distribution
• Server and computer system power rails
• Solar photovoltaic system protection

OR Controllers, Ideal Diodes Procurement Notes

Verify the specific suffix WTRPBF indicates tape and reel packaging when sourcing. Confirm that the IDCB variant meets the required industrial temperature grade (-40°C to +85°C). Ensure the external N-channel MOSFET selection aligns with the controller's drive capabilities and the application's voltage and current requirements. Cross-reference the datasheet for pinout compatibility with existing PCB layouts.

OR Controllers, Ideal Diodes Selection Notes

Select this component for applications requiring high-voltage ideal diode emulation where minimizing forward voltage drop is critical. It is suitable for replacing Schottky diodes in high-current scenarios to reduce heat dissipation. Consider the 6-pin DFN package for space-constrained designs. Verify that the 4V to 80V operating range matches the system's power rail specifications before integration.

OR Controllers, Ideal Diodes Part Context

This part belongs to the LTC4359 family of ideal diode controllers designed for high-voltage applications. It serves as a specialized PMIC solution for power path management. The device integrates control logic to manage external MOSFETs, offering advantages over discrete diode solutions by eliminating conduction losses and enabling bidirectional current flow control in redundant systems.

OR Controllers, Ideal Diodes Replacement Considerations

LTC4359CDCB#WTRPBF: Lower temperature grade version (Commercial range).

OR Controllers, Ideal Diodes FAQ

How does the LTC4359 handle reverse current during a fault?

The device provides fast turn-off capability to minimize reverse current transients if a power supply fails or shorts, protecting the system from back-feeding.

What type of external switch does the controller drive?

It is designed to drive a single external N-channel MOSFET to function as an ideal diode.