LTC4359IDCB#PBF

OR Controllers, Ideal Diodes Overview

The LTC4359IDCB#PBF 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 stress. The device operates within a supply voltage range of 4V to 80V and supports a maximum operating temperature of 85°C. It features reverse input protection down to -40V and offers low quiescent current consumption. Packaged in a 6-lead DFN EP surface-mount package, it ensures smooth, oscillation-free current delivery.

OR Controllers, Ideal Diodes Feature Summary

• Drives external N-channel MOSFETs to replace Schottky diodes for improved efficiency
• Provides reverse input protection to prevent damage from incorrect polarity
• Ensures oscillation-free smooth switching under all load conditions
• Supports ORing configurations for redundant power systems

OR Controllers, Ideal Diodes Applications

• Automotive battery protection circuits
• Redundant power supply systems
• Telecommunications infrastructure power distribution
• Server and computer system power management

OR Controllers, Ideal Diodes Procurement Notes

Verify the specific suffix IDCB corresponds to the commercial temperature grade (-40°C to +85°C) and DFN-6 package configuration. Confirm that the #PBF designation indicates lead-free compliance and RoHS standards. Ensure the supplier provides valid traceability documentation for automotive or industrial qualification requirements if applicable.

OR Controllers, Ideal Diodes Selection Notes

Select this component when replacing Schottky diodes in high-current applications to minimize voltage drop and heat generation. Choose the DFN-6 package for compact board space requirements. Ensure the external MOSFET selection matches the controller's drive capabilities and the system's voltage and current specifications.

OR Controllers, Ideal Diodes Part Context

The LTC4359 belongs to Analog Devices' specialized PMIC family designed for ideal diode control. It complements other controllers like the LTC4357 by offering robust reverse protection and wide input voltage tolerance. The series addresses reliability needs in harsh environments where traditional diode solutions fail due to excessive forward voltage drops.

OR Controllers, Ideal Diodes Replacement Considerations

LTC4359CDCB#PBF (Commercial grade variant)

OR Controllers, Ideal Diodes FAQ

How does the LTC4359 handle reverse input voltage?

The device includes built-in reverse input protection that can withstand negative input voltages down to -40V, protecting the circuit from incorrect polarity connections.

What is the purpose of the shutdown mode?

The shutdown mode reduces the quiescent current significantly, lowering it to 9μA for load switch applications and 14μA for ideal diode applications to conserve energy.