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Diode Controller Integrates 5 A MOSFET

Mon, 09/22/2008 - 12:45pm

Linear Technology announces its LTC4358 single high voltage ideal diode controller that uses an internal 5 A MOSFET to provide a simple, low loss replacement to Schottky diodes in high current applications. The controller and 20 m? internal N-channel MOSFET perform the function of a low forward voltage diode. This provides a lower loss path compared to the Schottky diode that in high current applications provides higher efficiency and preserves board area by eliminating the need for heat sinking. The controller regulates the forward voltage drop across the internal MOSFET to ensure smooth switchover from one path to another without oscillation. A fast pull-down circuit minimizes reverse current transients in the event a power supply fails or is shorted.
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