BlackVue rear dash cam IC marking code

[SMDFlea]

I`m trying to fix a BlackVue rear dash cam, and can`t ID a part. The package is SOT23-5 ,the marking is

ARETu

Only the U is underlined,probably a date or lot code. I`ll post some pictures later.

[SMDFlea]

Re: BlackVue rear dash cam IC marking code

After a few hours looking i found a similar part on ebay and lcsc.Its made by GStek ,the datasheets at their website are crap,no marking codes,and some don`t even have the pin numbers...

[lotas]

Re: BlackVue rear dash cam IC marking code

It looks like the manufacturer AEROSEMI, maybe it's M3406 (you need to look at the pinout)

[SMDFlea]

Re: BlackVue rear dash cam IC marking code

It looks like the manufacturer AEROSEMI, maybe it's M3406 (you need to look at the pinout)

Thanks lotas but i`m sure now its a GStek part, like this but marked ARETU https://www.lcsc.com/product-detail/...R_C532953.html

[lotas]

Re: BlackVue rear dash cam IC marking code

But here you need to look at the 4 pin involved or not.
And what is the marking of the GS7119 (at different fixed output voltages)

[SMDFlea]

Re: BlackVue rear dash cam IC marking code

But here you need to look at the 4 pin involved or not.
And what is the marking of the GS7119 (at different fixed output voltages)

I`ll be able to do some tests this weekend and take pictures.The marking codes are difficult to find,the datasheets don`t list each part number.

https://www.badcaps.net/forum/showpo...5&postcount=19

[SMDFlea]

Re: BlackVue rear dash cam IC marking code

The chip seems to be ok ,the fault is in the TRRS cable,there was no continuity on pole 2 and 3.

Pin 1, 3.3V .Pin 2, GND .Pin 3, 3.3V enable? .Pin 4, NC .Pin 5, 1.80

[lotas]

Re: BlackVue rear dash cam IC marking code

Yes, according to the pinout it is GS7119ST-1P8-R (1.8v output).