BMFBQA chip

[sepi53]

Does anybody know the chip in picture or equivalent ?

[pienari]

Hi.
Can you tell what device?

I think i found  something.. if i understood right it is battery charging ic?.


https://old-fidelity-forum.de/thread-50077-post-1628756.html#pid1628756

[amyk]

SY7120RAC

See picture here: https://item.szlcsc.com/208847.html

[sepi53]

Device is amiko finder 3 and yes battery charging ic

[timeandfrequency]

Hello sepi53,

Device is amiko finder 3 and yes battery charging ic

The SY7120RAC datasheet sucessfully found by 'amyk' talks about a boost (= step-up) converter, and not a battery charger.

As the 'amiko finder 3' power input is rated at 12 VDC 4,5A (blue arrow), features a 7.4V 6.3Ah internal battery, and also provides a 12 VDC 1A auxiliary power output (green arrow), I would guess that this chip is more likely involved in feeding the latter than charging the battery.
It is not very common that a chip designed for a dedicated function is used in a weird way, just to show off that it is possible to hack the device .

And it would be helpful/nice to update the title of this thread to be more specific about that mysterious chip

[pienari]

Is the chip shorted like that Edision Multifinder?.

Have you removed the chip and test is there chip failure or some other part shorted?.

Please check C3 / C17 / C18 / CP20 short?

[sepi53]

chip is out short is gone, is there equivalent chip ?

[timeandfrequency]

chip is out short is gone, is there equivalent chip ?

The chip is available from LCSC.
Any particular reason why you wish to purchase an equivalent, as the exact reference is available off-the-shelf ?

[sepi53]

Not available in Finland , but only way to get it is to order it abroad.

[timeandfrequency]

Not available in Finland , but only way to get it is to order it abroad.

It's not very surprising that no finnish distributor can supply the part.
SIlergy seems to be located in Taiwan and even MouserKey does not sell the SY7120RAC.


You may ask them if there's a distributor located in Europe, but just for buying one part, chances are rather low.
Silergy
EMEA
Telephone:+46708760142
Email:sales.emea@silergy.com

[sepi53]

ebay is the place to get them