LTC4418CUF#PBF

OR Controllers, Ideal Diodes Overview

The LTC4418CUF#PBF is a dual-channel prioritized PowerPath controller designed to connect one of two valid power sources to a common output based on defined priority. It operates with an input voltage range of 2.5V to 40V and supports reverse voltages up to 42V. The device utilizes external FETs and draws a typical quiescent current of 26µA. It functions within a temperature range of -40°C to +85°C and is housed in a 20-lead, 4mm x 4mm QFN package.

OR Controllers, Ideal Diodes Feature Summary

• Selects the highest priority valid power source from two inputs
• Prevents reverse and cross-conduction currents between channels
• Provides adjustable input validation time to ensure source stability
• Integrates a gate driver with a 6V clamp for external MOSFET protection

OR Controllers, Ideal Diodes Applications

• Industrial handheld instruments
• High availability systems
• Battery backup systems
• Servers and computer peripherals

OR Controllers, Ideal Diodes Procurement Notes

Verify the suffix 'CUF' indicates the commercial temperature grade (-40°C to +85°C) and 'PBF' denotes lead-free packaging. Confirm the specific manufacturer datasheet for the exact electrical characteristics and pinout configuration before integration into the design.

OR Controllers, Ideal Diodes Selection Notes

Choose this component when dual-input redundancy with strict priority logic is required. It is suitable for applications needing low standby current and fast switchover times. Ensure the external MOSFETs are compatible with the integrated gate driver's voltage limits and current capabilities.

OR Controllers, Ideal Diodes Part Context

This part belongs to Analog Devices' PowerPath controller family, which manages power flow between multiple sources. It serves as a high-power alternative to ideal diode controllers, offering explicit priority handling and robust fault protection for critical system power rails.

OR Controllers, Ideal Diodes Replacement Considerations

The LTC4417 is a three-channel variant of this controller. The LTC4419 offers similar prioritization but with different voltage and current specifications. Verify pin compatibility and electrical ratings when substituting.