D8839FC is a smart secondary-side switch IC
designed for isolated fly-back system. The IC
emulate the behavior of Schottky diode rectifier for
reduces power dissipation. D8839FC works in
CCM/DCM and QR operation modes. Ruggedness
and noise immunity are accomplished using an
advanced blanking scheme and double-pulse
suppression which allow reliable operation in all
operating modes. D8839FC senses the build-in MOSFET
drain-source voltage, and output ideal drive signal
with less external components. It can support wide
rang of system output voltage 5V~20V 。