I bought two identical flashlights, both have the same driver (marked WK03) and build —no noticeable differences.
Can anyone reverse engineer and explain the driver? A short explanation would be great.
Its 19.3 mm in wider point.
AFRV is probably 4A mosfet
PL7203 SOP8 3ASynchronous step-down lithium battery chargingIC product aimed at 5V3 of the AC adapter A Lithium ion battery charger
30N02 is some kind of mosfet, cant find data.
fmd g4e3hch dunno
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The driver was easy to remove since the holders were soft, but reinstalling it might be difficult. Tube is solid, so its hard to find way to insert cables into holes all the way down.
The diode base is lightweight with low thermal capacity—adding a few grams of aluminium would improve it.
The pill (diode base) was press-fitted into the body. A few hammer taps with a metal rod removed it without major damage.
The body material is thin but strong—it survived some crushing without bending.
To remove the TIR holder, I applied heat to the flashlight, which made it come off easily.
Tomorrow ill try to put some thermal camera photos.