This device SW8900 includes a high voltage start up current source connected on the SW of the device. As soon as a voltage is applied on the input of the converter, this start up current source is activated and to charge the VCC capacitor as long as VCC is lower than VSTART. When reaching VSTART, the start up current source is cut off by UVLO&TSD and the device begins to operate by turning on and off its main Power MOSFET As the COMP pin does not receive any current from the opto-coupler, the device operates at full current capacity and the output voltage rises until reaching the regulation point where the secondary loop begins to send a current in the opto-coupler. At this point, the converter enters a regulated operation where the COMP pin receives the amount of current needed to deliver the right power on secondary side. By samwinsemi
SW8900 's PackagesSW8900 's pdf datasheet

SW8900 Pinout, Pinouts
SW8900 pinout,Pin out
This is one package pinout of SW8900,If you need more pinouts please download SW8900's pdf datasheet.

SW8900 Application circuits
SW8900 circuits
This is one application circuit of SW8900,If you need more circuits,please download SW8900's pdf datasheet.

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SW8900 Application Notes SW8900 RoHS SW8900 Circuits SW8900 footprint