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Please help me to identify this TO220-22 IC Chip for BMW TCM. Thanks !!!

Discussion in 'Electronic Components' started by virtualgarage, Jun 21, 2007.

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  1. So far, as I know, this TO220-22 with a symbol and 080 00005 1183 692
    has quadri- open collector drivers to 4 external solenoids.

    This chip is used on a transmission control module dated 1988/4 for
    BMW vehicle, as image below.

    I have been browsing internet for over 3 days now without any luck so
    far. I can NEVER find the TO220 with 22 pin! It looks to me like a PWM
    solenoid driver but just my guess. There is 23 holes on the PCB as
    you may see in this picture but only has 22 pin counts on this chip.

    I need to find out the pin definition and datasheet. For a quadri-
    drivers, I cann't understand why they have 22pin counts? Let us prove
    how usenet can enlighten people!

    If anyone knows about any information, please kindly let me know.

    http://bimmerboard.com/members/1988bmw750il/original/whatchip.jpg
     
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  3. Joerg

    Joerg Guest

    The logo in the upper right corner is the company logo of Bosch. Your
    might want to contact them:

    http://www.bosch-sensortec.com/content/language1/html/index.htm

    But don't hold your breath. I have done chip projects with automotive
    foundries and the stuff they do is usually highly proprietary, meaning
    that it may be possible that they never release any information except
    to BMW.
     
  4. Franc Zabkar

    Franc Zabkar Guest

    Whenever I reverse engineer automotive electronics, I start at the
    connector and work inwards.

    The 6 caps nearby would suggest 6 drivers with 3 pins per driver plus
    power and ground pins (???). Look for any symmetry.

    If the problem is limited to one driver, then you may be able to
    substitute a single discrete driver at the rear of the heatsink.

    - Franc Zabkar
     
  5. Not even BMW will get detailed information about such proprietary
    chips/hybrids.


    Regards,
    Dieter
     
  6. Joerg

    Joerg Guest

    In that case, if it is a Bosch design then the OP should be able to buy
    that hybrid from Bosch. At least when I lived in Germany this company
    was very good about selling spare parts. I even got motor brushes for a
    1950's kitchen blender there.
     
  7. Bosch does not sell such parts to consumers.

    You are talking about two differnt companies, this is
    Bosch-Siemens-Homeappliances, a joint venture of Bosch and Siemens.
    And nowadays you will be lucky to get spare parts after more than 10
    years.


    Regards,
    Dieter
     
  8. Joerg

    Joerg Guest

    Not a good thing IMHO. It precludes the discovery of secondary
    applications and thus potential "upside" sales.
    Also not good. Once people find that out they tend to think that they
    might as well buy everything at Walmart then. Why pay more if there
    isn't a tangible benefit?
     
  9. Hal Murray

    Hal Murray Guest

    Bosch does not sell such parts to consumers.
    I assume the logic is that it avoids a lot of support costs.
     
  10. Joerg

    Joerg Guest

    Not necessarily. Just state openly that this is a specialty product with
    little support. Honesty goes a long way. Lots of EEs are used to that.
    For example those who must turn every penny in their BOMs and have to
    rely on Asian sources. Even if you are fluent in Japanese or Chinese
    support can still be hard to come by and the time zones don't exactly help.
     
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