LTC4370CMS#PBF

OR Controllers, Ideal Diodes Overview

The LTC4370CMS#PBF is a two-supply, diode-OR, current balancing controller from Analog Devices. It incorporates MOSFET ideal diodes to share load currents between supplies without requiring a share bus or supply trim pins. The device operates with input supplies ranging from 2.9 V to 18 V and supports high-side operation up to 18 V. It features enable inputs for low-current shutdown and status outputs indicating MOSFET states. Packaged in a 16-lead MSOP, it blocks reverse and shoot-through currents during faults.

OR Controllers, Ideal Diodes Feature Summary

• Shares load currents between two power supplies by adjusting forward voltage drops
• Eliminates the need for active control of input supplies or dedicated share buses
• Blocks reverse and shoot-through currents during start-up and fault conditions
• Provides fast gate turn-on to reduce load voltage droop during supply switchover

OR Controllers, Ideal Diodes Applications

• Redundant power supplies
• Telecom and network infrastructure
• High availability systems and servers

OR Controllers, Ideal Diodes Procurement Notes

Verify the specific package variant against the datasheet, as the CMS suffix denotes the MSOP-16 package. Confirm that the operating voltage range of 2.9 V to 18 V aligns with system requirements. Ensure external circuitry for gate drive is compatible with the controller's logic levels. Check for any recent product change notices regarding epoxy or marking changes.

OR Controllers, Ideal Diodes Selection Notes

Select this component when designing redundant power architectures requiring precise current sharing without complex bus communication. It is suitable for applications needing fast switchover times and minimal reverse current transients. Consider the 16-lead MSOP package for space-constrained designs. Verify that the maximum MOSFET voltage drop setting resistor values meet efficiency targets.

OR Controllers, Ideal Diodes Part Context

The LTC4370 belongs to Analog Devices' portfolio of ideal diode controllers. It differs from standard ideal diode ICs by focusing on load sharing between multiple sources rather than single-source rectification. The family includes variants like the LTC4370CDE in DFN packages. It serves as a core component for building robust, redundant power distribution networks.

OR Controllers, Ideal Diodes Replacement Considerations

LTC4370CDE#PBF offers the same functionality in a 16-lead DFN (4 mm x 3 mm) package instead of MSOP.