I'm looking for replacement/datasheet of this IC

[Chris02]

Hey!

I have got a navigon 63xx navigation system which is not charging anymore.
Charging voltage is only pulsing and not stable. I already found the fault (the red marked IC) but I can't find any information about it. No datasheet, no shop where I can buy it ...

I hope someone here can find a littlebit more about this IC.


Thanks!

Regards
Chris