PSR ACDC-CN1810 (External MOS)

The CN1810 simplifies CV/CC mode switching power supply design by eliminating the need for optocouplers and secondary side control circuits through primary side voltage and current sampling techniques. It also features precise output voltage and current regulation. CN1810 multiple operation modes can realize 30mW standby power consumption, high efficiency and no noise. Frequency dithering technology can greatly reduce the cost of EMI filters. CN1810 can precisely adjust CV/CC, featuring low cost and high reliability. It also provides rich protection functions: including cycle-by-cycle peak current limit, VCC undervoltage lockout (UVLO), overvoltage protection (OVP) and clamp. When an exception occurs, the controller continuously attempts a soft restart until the fault condition is removed. CN1810 is available in a small SOT23-6 package and drives an external MOSFET or high voltage BJT.