Looking for informations on the TY94084FB chip - Page 1
Forum section: electronics / repair

author: Biduleohm
author_rank: Contributor
timestamp: December 16, 2021, 03:20:39 pm
content: Hi,I'm currently trying to repair an ECM which uses some Motorola TY94084FB drivers. The one driving the injectors still kind of works but seems too weak to drive them.I looked for the datasheet to see what the output current specs are and if there is stuff like current limiting, etc... to confirm this IC is the source of the problem 100 % sure, but it was impossible to find it. I also contacted NXP over their chat and they told me they don't have this part number in their database.It's a 20 pins SOP with thermal pad accross the long side and has 4 outputs, with pins 2, 9, 12 and 19 being the drains/collectors.I would be forever thankful if someone has any kind of information on that IC (even just the pinout would be a start...) or at least a similar IC.

author: fzabkar
author_rank: Super Contributor
timestamp: December 16, 2021, 05:32:48 pm
content: This was all I could find:https://www.ms4x.net/index.php?title=Siemens_MS43_PCB_Components

author: Biduleohm
author_rank: Contributor
timestamp: December 16, 2021, 07:34:24 pm
content: I already found that page during my research but sadly there's nothing on it that I don't already know.Thanks a lot for looking for infos tho

author: asis
author_rank: Frequent Contributor
timestamp: December 16, 2021, 09:15:24 pm
content: Hi,Look at here.https://datasheetspdf.com/datasheet/search.php?sWord=TLE+62https://datasheetspdf.com/pdf/318527/InfineonTechnologiesAG/TLE6220GP/1

author: Biduleohm
author_rank: Contributor
timestamp: December 16, 2021, 09:30:49 pm
content: Oh wow, I think I found it:https://www.nxp.com/docs/en/data-sheet/MC33385.pdfI searched using the manufacturer, IC type and packageI'll have to trace most pins to see if it matches but that must be it, everything I know of it matches so far.Edit:Quote from: asis on December 16, 2021, 09:15:24 pmNiceIt looks like an equivalent. Sadly it seems as obsolete as the MC33385 but at least I have datasheets to work from now, thanks

author: fzabkar
author_rank: Super Contributor
timestamp: December 16, 2021, 09:44:21 pm
content: I just did the same thing. Were you looking over my shoulder? :-)https://ipv4.google.com/search?q=filetype%3Adoc+OR+filetype%3Apdf++%2220+HSOP%22+%22freescale+semiconductor%22+OR+motorola

author: Biduleohm
author_rank: Contributor
timestamp: December 16, 2021, 09:53:17 pm
content: No, I swearSo I checked the pinout and the TLE6220GP doesn't match, it has its inputs where should be the outputs. But it is very similar otherwise.

author: CaptDon
author_rank: Super Contributor
timestamp: December 17, 2021, 03:35:32 am
content: As soon as you see those Motorola bat wings you can assume it is a house numbered part with no direct datasheet or cross reference!!! I worked on their pagers and two-way junk long enough to hate anything with the bat wings.

author: Biduleohm
author_rank: Contributor
timestamp: December 17, 2021, 01:59:26 pm
content: By bat wings you mean the Motorola logo? I'm pretty sure it was used on non-internal numbered ICs too.So far the MC33385 seems to be the perfect cross ref. Even if I need to confirm it 100 % of course.

author: fzabkar
author_rank: Super Contributor
timestamp: December 18, 2021, 06:19:47 pm
content: I just found this Freescale MPC563xM Engine Control Unit Reference Design:http://www.frankencis.com/portals/2/frankencis/AN4156_MPC563xM_Engine_ReferenceAug2011_updated.pdfIt's not relevant to the current thread, but it's an interesting read.

author: Biduleohm
author_rank: Contributor
timestamp: December 19, 2021, 10:45:35 pm
content: That's pretty cool, thanksI wasn't home this week-end so I wasn't able to make the confirmation measurements I wanted to make yet.