File talk:Mitsumi 348A.jpg

From PS3 Developer wiki
Jump to navigation Jump to search

Why Microchip?

Manufacturer is MITSUMI, not Microchip.

For Example: http://www.utsource.net/ic-datasheet/MM1024A-1766443.html

http://www.marjorie.de/kawai/kawai22.htm

I was checked service manuals for COK001, voltage regulators labeled with same letter are ICs manufactured by Mitsumi.

It was labeled as microchip because the logo is very similar (most microchip ic's has a circle aroung the "M" but there are some that doesnt), but i think you are right, mitsumi sounds about right because:

There are other IC's in the PS3 motherboard manufactured by mitsumi

Microchip is a corporation too big for supplying small ic's to sony... sony could use any other cheap manufacturer (like mitsumi)

There are photos in internet of mitsumi ic's with the logo and looks exactly like the logo used in ps3 ic's

There is no datasheet from mitsuni matching the model 348 or 463 though http://www.mitsumi.co.jp/latest/Catalog/indexuse/index_e.html


https://www.psdevwiki.com/ps3/File:MTfYgFE.png https://www.psdevwiki.com/ps3/File:wf8hDvP.png

This is from service manual for COK001. These are all voltage regulators labeled with same "M"
@first picture: MM1562ZFBE (2.5V), MM1591JFBEG (1.8V), MM1591FFBEG (1.5V), MM1593DFBEG (3.3).
chips marked as 562Z, 591J, 591F, 593D
@second picture: MM1761KHBE (1.9V)
chip marked as 761K

service man for MM1761KHBE: http://www.mitsumi.co.jp/latest/Catalog/pdf/regulate_mm_176x_e.pdf

The voltage regulator schematics in the COK-001 manuals seems different pinout of what i meassured in 348A and 463A and different features, 348A and 463A has two separated output voltages each, and are driven by syscon

Btw... the photos of 348A and 463A was labeled "voltage regulator" as a simplification because probably the real name of the component is more technicall

Retrieved from "http://www.psdevwiki.com/ps3/index.php?title=File_talk:Mitsumi_348A.jpg&oldid=71186"