DESCRIPTION
The LTC®4352 creates a near-ideal diode using an external N-channel MOSFET. It replaces a high power Schottky diode and the associated heat sink, saving power and board area. The ideal diode function permits low loss power ORing and supply holdup applications.
The LTC4352 regulates the forward voltage drop across the MOSFET to ensure smooth current transfer in diode-OR applications. A fast turn-on reduces the load voltage droop during supply switch-over. If the input supply fails or is shorted, a fast turn-off minimizes reverse currents.

FEATURES
■ Low Loss Replacement for Power Diode
■ Controls N-Channel MOSFET
■ 0V to 18V Supply ORing or Holdup
■ 0.5μs Turn-On and Turn-Off Time
■ Undervoltage and Overvoltage Protection
■ Open MOSFET Detect
■ Status and Fault Outputs
■ Hot Swappable
■ Reverse Current Enable Input
■ 12-Pin MSOP and DFN (3mm × 3mm) Packages

APPLICATIONS
■ Redundant Power Supplies
■ Supply Holdup
■ Telecom Infrastructure
■ Computer Systems and Servers