The LTC4229 offers ideal diode and Hot Swap™ functions for a power rail by controlling two external N-channel MOSFETs. The MOSFET acting as an ideal diode replaces a high power Schottky diode and the associated heat sink, saving power and board area. The Hot Swap MOSFET control allows a board to be safely inserted and removed from a live backplane by limiting inrush current. The supply output is also protected against short-circuit faults with a fast acting foldback current limit and electronic circuit breaker. The LTC4229 regulates the forward voltage drop across the external MOSFET to ensure smooth current transfer in diode-OR applications. The ideal diode turns on quickly to reduce the load voltage droop during supply switchover. If the input supply fails or is shorted, a fast turn-off minimizes reverse-current transients. The LTC4229 provides adjustable start-up delay, undervoltage and overvoltage protection, and reports fault and power good status for the supply. It can be configured for latch off or automatic retry after a fault. Applications * Redundant Power Supplies * Supply Holdup * High Availability Systems and Servers * Telecom and Network Infrastructure * Power Prioritizer * Ideal Diode and Inrush Current Control for Redundant Supplies * Low Loss Replacement for Power Schottky Diode * Protects Output Voltage from Input Brownouts * Allows Safe Hot Swapping from a Live Backplane * 2.9V to 18V Operating Range * Controls Back-to-Back N-Channel MOSFETs * Limits Peak Fault Current in ≤1μs * Adjustable Current Limit with Foldback * Adjustable Start-Up and Current Limit Fault Delay * 0.5μs Ideal Diode Turn-On and Turn-Off Time * Undervoltage and Overvoltage Protection * Status, Fault and Power Good Outputs * Pin Selectable Latch Off or Automatic Retry After Fault * 24-Lead 4mm × 5mm QFN and SSOP Packages https://elecena.pl/product/4410455/ideal-diode-and-hot-swap-controller 2013-08-29 https://elecena.pl/product/4410455/ideal-diode-and-hot-swap-controller 2013-10-17 https://elecena.pl/product/4410455/ideal-diode-and-hot-swap-controller 2025-01-22