LTC4353IMS#PBF

OR Controllers, Ideal Diodes Overview

The LTC4353IMS#PBF is a dual low-voltage ideal diode controller manufactured by Analog Devices Inc. It controls external N-channel MOSFETs to implement an ideal diode function, replacing high-power Schottky diodes and associated heat sinks to save power and board area. The device supports supplies from 2.9V to 18V and regulates the forward-voltage drop across the MOSFET for smooth current transfer in diode-OR applications. It features fast turn-on to reduce load voltage droop during supply switchover and fast turn-off to minimize reverse-current transients if an input supply fails or shorts.

OR Controllers, Ideal Diodes Feature Summary

• Controls external N-channel MOSFETs to implement ideal diode functionality
• Regulates forward-voltage drop for smooth current transfer in diode-OR applications
• Fast turn-on reduces load voltage droop during supply switchover
• Fast turn-off minimizes reverse-current transients during input failure

OR Controllers, Ideal Diodes Applications

• Low loss power supply oring
• Supply holdup applications
• Telecom and network infrastructure systems

OR Controllers, Ideal Diodes Procurement Notes

Verify the specific suffix #PBF indicates tube packaging when sourcing. Confirm the manufacturer is Analog Devices Inc. Ensure the component meets RoHS compliance requirements for your assembly process. Check datasheet specifications for operating temperature range and electrical limits before integration.

OR Controllers, Ideal Diodes Selection Notes

Select this component for applications requiring efficient power path management with external MOSFETs. It is suitable where minimizing conduction losses and thermal dissipation is critical compared to standard diode solutions. Ensure the external MOSFET selection aligns with the controller's drive capabilities and the required current handling for the specific application.

OR Controllers, Ideal Diodes Part Context

This part belongs to the LTC4353 series of ideal diode controllers. It is designed to replace traditional Schottky diodes in power distribution networks. The IMS package allows for surface mount installation. The device integrates enable inputs and status outputs for system monitoring and control flexibility.

OR Controllers, Ideal Diodes FAQ

What is the operating voltage range for the LTC4353?

The controller operates with supplies from 2.9V to 18V.

How does the LTC4353 handle input supply failures?

If an input supply fails or is shorted, a fast turn-off minimizes reverse-current transients.