LTC4227CGN-2#PBF

Hot Swap Controllers Overview

The LTC4227CGN-2#PBF is a dual ideal diode and single hot swap controller housed in a 16-lead SSOP package. It operates within a 2.9V to 18V supply range and controls external N-channel MOSFETs for power path management. The device provides ideal diode-OR functionality for redundant supplies and hot swap capabilities for safe insertion into live backplanes. Key electrical characteristics include peak fault current limiting in less than 1µs, an ideal diode turn-on time of 0.5µs, and reverse turn-off time of 0.5µs. It features adjustable current limit with circuit breaker protection and reports fault and power good status.

Hot Swap Controllers Feature Summary

• Replaces high-power Schottky diodes with low-loss N-channel MOSFET control to save board area and power
• Enables safe hot swapping from live backplanes by regulating inrush current during board insertion
• Ensures smooth switchover between redundant power rails without oscillation
• Provides fast-acting short-circuit protection with internal timed circuit breaker

Hot Swap Controllers Applications

• Redundant power supplies
• Computer systems and servers
• Telecom networks

Hot Swap Controllers Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and tube packaging when ordering. Confirm the 16-lead SSOP package dimensions match your PCB footprint requirements. Ensure external N-channel MOSFETs selected are compatible with the controller's gate drive voltage and current limit settings. Check for any recent product change notifications regarding pinout or electrical specifications before finalizing procurement.

Hot Swap Controllers Selection Notes

Select this component when designing systems requiring dual redundant power inputs with seamless transfer logic. It is suitable for applications needing controlled inrush current during hot insertion events. Consider the 2.9V to 18V operating range to ensure compatibility with system rail voltages. Evaluate the need for adjustable current limit and fault delay features against specific load protection requirements.

Hot Swap Controllers Part Context

This part belongs to the LTC4227 family of power management ICs designed for robust power distribution architectures. It integrates both ideal diode OR-ing and hot swap control functions into a single chip, reducing component count compared to discrete solutions. The SSOP package offers a compact form factor suitable for space-constrained industrial and telecom equipment designs.

Hot Swap Controllers Replacement Considerations

LTC4227CGN-2#TRPBF is the tape-and-reel version of the same functional device.