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FS312F-G lithium cell protection IC - selection of depletion-mode MOSFETs

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seanspotatobusiness:
Look up symbols of depletion mode versus enhancement mode mosfets. The thing that differentiates them is a solid versus a dotted line. The line in the schematic is solid, not dotted. The symbols in the datasheet schematic are for depletion mode mosfets. I think it's a badly done schematic if they are supposed to be enhancement mode.

wraper:
I really doubt they should be depletion mode. It would make no sense for protection device, nor are they cheap or common. I think manufacturer just used incorrect MOSFET symbol in their datasheet.

ifonlyeverything:
They make breakout boards by the millions with these ICs and TP4056 for charge control. They commonly use FS8205A MOSFETs, which are not depletion mode.

Peabody:
GreatScott ended up using this part in the final version of a charger board, and I'm sure he didn't use depletion mode mosfets.  About 8:25 into the video.  He says it's the same as the DW01 except for the higher overdischarge voltage.

seanspotatobusiness:
Thanks for the video link. I accept that they are enhancement mode; it was just a misleading schematic symbol. When I look at multiple images of capacitor symbols via Google Images, some say it's polarised and some don't. I'll just use a 0603 ceramic.

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