LTC4355CMS#TRPBF

OR Controllers, Ideal Diodes Overview

The LTC4355CMS#TRPBF is a high voltage ideal diode controller manufactured by Analog Devices Inc., designed for professional power management applications. It operates within an input and output voltage range of 9V to 80V, making it suitable for robust power distribution systems. The device is housed in a compact MSOP-16 surface-mount package, facilitating integration into space-constrained designs. It features an internal charge pump that enables the use of low RDS(ON) N-channel MOSFETs to replace standard Schottky diodes, significantly reducing conduction losses. The component includes integrated current limit control and reverse current blocking capabilities to protect downstream loads.

OR Controllers, Ideal Diodes Feature Summary

• Ideal diode ORing functionality with integrated reverse current blocking
• Internal charge pump supports low RDS(ON) N-channel MOSFET implementation
• Configurable current limit threshold via external resistor
• High voltage operation up to 80V for industrial power buses

OR Controllers, Ideal Diodes Applications

• -48V dual feed power combining in telecommunications infrastructure
• Hot-swappable power supply redundancy systems
• High voltage bus protection and isolation circuits
• Industrial equipment power distribution modules

OR Controllers, Ideal Diodes Procurement Notes

Verify availability status carefully as this specific part number may be subject to limited supply conditions or factory special orders. Confirm the exact suffix matches the required package and tape/reel specifications. Cross-reference the manufacturer datasheet for any recent product change notifications or pinout updates before finalizing procurement plans to ensure compatibility with existing design constraints.

OR Controllers, Ideal Diodes Selection Notes

Select this component when designing high-voltage power paths requiring efficient rectification without the forward voltage drop of traditional diodes. The MSOP-16 package offers a balance between thermal performance and board space efficiency. Ensure the external MOSFET selection aligns with the controller's drive capabilities and the application's current requirements. Consider the thermal dissipation characteristics of the chosen MOSFET in conjunction with the controller's loss reduction benefits.

OR Controllers, Ideal Diodes Part Context

The LTC4355 belongs to Analog Devices' specialized PMIC family focused on power path management. It complements other ideal diode controllers like the LTC4354 and LTC4357, offering specific features for high-voltage ORing applications. This series addresses the need for improved efficiency in power systems where Schottky diode losses are prohibitive, particularly in -48V telecom and industrial environments.

OR Controllers, Ideal Diodes Replacement Considerations

LTC4355IS#PBF (SOIC-16 package variant)

OR Controllers, Ideal Diodes FAQ

How does the LTC4355 reduce power dissipation compared to Schottky diodes?

It uses an internal charge pump to drive an external N-channel MOSFET, which has a much lower on-resistance than the forward voltage drop of a Schottky diode, thereby significantly reducing conduction losses.

What is the maximum operating voltage for the LTC4355CMS#TRPBF?

The device supports input and output voltages ranging from 9V to 80V.