LTC4218CGN#PBF

Hot Swap Controllers Overview

The LTC4218CGN#PBF is a dual ideal diode-OR and single hot swap controller manufactured by Analog Devices Inc. It integrates two ideal diode controllers for power redundancy or OR-ing applications and a single hot swap controller for safe insertion and removal of circuit boards from live backplanes. The device features adjustable current limiting, programmable rise time, and comprehensive fault protection including overvoltage, undervoltage, and thermal shutdown. It operates within a wide supply voltage range and supports external MOSFETs to handle high currents efficiently.

Hot Swap Controllers Feature Summary

• Integrates dual ideal diode controllers for redundant power input management
• Includes single hot swap controller with adjustable current limit and programmable slew rate
• Provides comprehensive fault protection mechanisms for system reliability

Hot Swap Controllers Applications

• Redundant power supply systems requiring ideal diode OR-ing
• Hot swap applications for board insertion and removal in live backplanes
• Power distribution units managing multiple power sources

Hot Swap Controllers Procurement Notes

Verify the specific package type and temperature grade against the official datasheet before procurement. Confirm availability status as limited supply conditions may apply. Ensure compatibility with external MOSFET selection for current handling requirements. Check for any recent product change notifications that might affect pinout or specifications.

Hot Swap Controllers Selection Notes

Select this component when dual ideal diode functionality combined with single channel hot swap control is required. Consider the operating voltage range and current capabilities relative to the external MOSFETs used. Evaluate the need for programmable rise times and current limits based on system inrush and fault protection requirements. Compare with single-channel alternatives if only one hot swap path is needed.

Hot Swap Controllers Part Context

This part belongs to the LTC42xx series of hot swap and ideal diode controllers from Analog Devices. These devices are designed for robust power management in industrial and telecommunications equipment. The CGN suffix indicates a commercial temperature range and SSOP-24 package. This series emphasizes ease of use with integrated MOSFET drivers and protection logic.

Hot Swap Controllers FAQ

What is the primary function of the dual ideal diode section?

The dual ideal diode section manages power OR-ing or redundancy between two input sources, allowing current to flow from the higher voltage source while blocking reverse current from the lower voltage source.

How does the hot swap controller protect the system during insertion?

It controls the gate of an external N-channel MOSFET to ramp up the load voltage at a programmable rate, limiting inrush current and preventing voltage droop on the bus during board insertion.