Good Day Folks,
I got here a list which I believe is accurate to all of the important power IC’s of the switch lite except for M92T36 (which I think was built specifically only for the switch and or the IC for the M92 is available but given a different name).
I “found” them off of digikey and mouser electronics.
Button Mapping IC
https ://www.digikey.ca/en/products/detail/stmicroelectronics/STM32F038C6T6/5051263
This one above i think needs to be programmed to recognize button inputs. There’s a chapter on the data sheet specifically about button mapping but doesn’t tell how to do it. Prob a youtube search or something like that. So i wouldn’t think you can just simply buy a new Button IC and swap out a faulty button IC like a drag and drop fix.
BQ IC.
https ://www.digikey.ca/en/products/detail/texas-instruments/BQ24193RGET/3727319
BQ IC from mouser.
https ://www.mouser.ca/ProductDetail/Texas-Instruments/BQ24193RGET?qs=E2%2FxqS9xjzoKNwvlSee%2Faw%3D%3D
Another version of BQ but i think still functions the same way. Cant confirm, the data sheets looks relatively the same though.
https ://www.digikey.ca/en/products/detail/texas-instruments/BQ24193RGER/3725749
The other BQ version from mouser.
https ://www.mouser.ca/ProductDetail/Texas-Instruments/BQ24193RGER?qs=E2%2FxqS9xjzprfPaRl%2FdVSQ%3D%3D
I think this would be the IC to send enable signals to the CPU (or APU or SOC…btw what does SOC mean?). Now on the switch, it shows MAX77620H, but this one ends in C on the displayed picture. Also, there isn’t an available data sheet but there is an ECAD model thing which i dont have a clue what that might be. Also, maybe there has to be some design put on as well to have this IC chip to work as intended, not a clue. I think ill pick up one to test if I can drag and drop and see if i get the expected results I’m looking for (ex, no change in system performance on a good working switch lite)
https ://www.mouser.ca/ProductDetail/Analog-Devices-Maxim-Integrated/MAX77620GEWJ%2bT?qs=GedFDFLaBXHdeK6i3f3%252Buw%3D%3D
On the data sheet here, it references MAX 17050, so maybe this model MAX17047 can be used as a reliable swap?
https ://www.mouser.ca/ProductDetail/Analog-Devices-Maxim-Integrated/MAX17047G%2b?qs=mjQJCq%2FOKaFwu1CFeE5Q2Q%3D%3D
Hope this helps for finding sources to use as replacements as opposed to other workshops that salvaged these chips, and defer from buying another broken board off of ebay or getting the chips from AliExpress which might not be as reliable.
Oh and one last thing, dont forget to get rid of the spaces on the link by https.