南芯SOUTHCHIP SC3501SAER SOT23-6

　　Description

　　SC3501 is a smart secondary-side driver IC designed to

　　drive N-Channel power MOSFET used as synchronous

　　rectifiers in isolated flyback converters. The MOSFET can

　　replace Schottky diode so the system can achieve higher

　　efficiency and superior heat dissipation performance.

　　The SR MOSFET is turned on when VDS falls below turn-on

　　threshold, and turned off when VDS exceeds turn-off

　　threshold. The SR conduction voltage drop is continuously

　　monitored to minimize the conduction loss. The extremely

　　fast turn-off comparator and driving circuitry ensures the

　　safety of the SR MOSFET, even in current continuous mode

　　(CCM) condition.

　　The IC can work well in wide output voltage range, even in

　　short circuit conditions. The patented turn on detection

　　circuity prevents SR turn on when Vds rings severely. The

　　wide VDD range and gate driver technology make the

　　controller ideal for wide output voltage range applications,

　　such as adapters, chargers, USB Power Delivery (USB-PD),

　　etc.

　　This chip supports both high side rectification and low side

　　rectification.