LTC4370IMS#PBF

OR Controllers, Ideal Diodes Overview

The LTC4370IMS#PBF is a two-supply, diode-OR, current balancing controller manufactured by Analog Devices Inc. It incorporates MOSFET ideal diodes to share load currents between supplies without requiring a share bus or 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 fast gate turn-on to reduce load voltage droop during switchover and fast turn-off to minimize reverse current transients during faults. The component is housed in a 16-lead MSOP package.

OR Controllers, Ideal Diodes Feature Summary

• Shares load between two supplies by adjusting forward voltage of integrated MOSFET ideal diodes
• Eliminates need for active control of input supplies or external share bus connections
• Blocks reverse and shoot-through currents during start-up and fault conditions
• Provides enable inputs for low current state and status outputs indicating MOSFET on/off state

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 suffix #PBF indicates lead-free packaging compliant with RoHS standards. Confirm the IMS package variant matches the required 16-lead MSOP footprint for PCB layout. Check manufacturer documentation for any recent lifecycle changes or obsolescence notices, as supply status may vary. Ensure the operating voltage range of 2.9 V to 18 V aligns with system requirements.

OR Controllers, Ideal Diodes Selection Notes

Select this controller when designing redundant power architectures that require precise current sharing without complex bus communication. It is suitable for applications needing fast switchover times to maintain load voltage stability. Consider the 16-lead MSOP package size for space-constrained designs. Verify that the input supply voltages remain within the specified 2.9 V to 18 V operational window for optimal performance.

OR Controllers, Ideal Diodes Part Context

The LTC4370 belongs to Analog Devices' portfolio of power management controllers designed for high-reliability applications. It integrates ideal diode functionality with load sharing capabilities, distinguishing it from standard OR-ing controllers. The device simplifies design by removing the need for external current-sharing resistors or dedicated communication lines between power sources.

OR Controllers, Ideal Diodes FAQ

Does the LTC4370 require a share bus for load balancing?

No, the LTC4370 shares load currents between supplies without requiring a share bus or trim pins on the supply.

What is the maximum high-side operation voltage?

The controller supports high-side operation up to 18 V.