LTC4357HMS8#TRPBF

OR Controllers, Ideal Diodes Overview

The LTC4357HMS8#TRPBF is an N+1 ORing controller manufactured by Analog Devices Inc., designed for high-voltage power distribution applications. It operates with supply voltages ranging from 9V to 80V and supports external N-channel MOSFETs. The device features a compact 8-lead MSOP package and is rated for an operating temperature range of -55°C to +125°C. Key electrical specifications include a maximum output voltage of 80V, a supply current of 500µA, and an OFF delay time of 300ns. This component serves as a specialized PMIC for managing redundant power sources.

OR Controllers, Ideal Diodes Feature Summary

• Provides N+1 redundancy control for multiple power inputs using a single controller
• Supports external N-channel MOSFETs for low-loss ideal diode emulation
• Includes programmable delay timing to manage inrush currents and fault conditions

OR Controllers, Ideal Diodes Applications

• Redundant power supply systems
• Telecom infrastructure power distribution
• High-voltage bus protection circuits

OR Controllers, Ideal Diodes Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm the automotive grade designation if required for your application, as standard and automotive variants may differ in qualification standards. Ensure compatibility with the 8-MSOP footprint during PCB layout. Check current availability status as supply constraints may affect lead times.

OR Controllers, Ideal Diodes Selection Notes

Select this component for designs requiring high-voltage ORing logic up to 80V. Consider the 8-MSOP package size for space-constrained layouts. Evaluate the need for automotive qualification; if required, verify the MPMS8 variant. Ensure the external MOSFET selection aligns with the controller's drive capabilities and the 500µA supply current budget.

OR Controllers, Ideal Diodes Part Context

This part belongs to the LTC4357 family of ORing controllers. It shares functional similarities with other members like the LTC4357HMS8#PBF but differs in packaging format. The family is designed for high-voltage power management, offering solutions for load sharing and redundancy in industrial and telecom environments.

OR Controllers, Ideal Diodes Replacement Considerations

The LTC4357MPMS8#TRPBF is a confirmed automotive-grade substitute within the same series. Verify pinout compatibility and thermal performance differences between the commercial and automotive grades before substitution.