switch regulator ma2820

[Zener_Diode]

hey
The MA2820 have 7 pins, in it's datasheet there is a ciruit with 3 pins connected. for what another 4 pins???

https://semi.shindengen.co.jp/en/ma2820.pdf

 

[Optikon]

hey
The MA2820 have 7 pins, in it's datasheet there is a ciruit with 3 pins connected. for what another 4 pins???

https://semi.shindengen.co.jp/en/ma2820.pdf

This is a lousy datasheet. You will probably have to contact the MFG.. and good luck with that by the looks of their site..CRAP...

Or, someone might have a chipdocs account and will be nice enough to get a better datasheet for you.