Information needed about ST L9170 Voltage Regulator used in vehicle ECUs

[GMarq.1]

Dear ST,

I am currently analysing a project that uses a ST L9170 voltage regulator.

I have 3 units and I wanted to test them in order to make sure they are working properly but it seems that there is no datasheet or any info available regarding this component.

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I know for a fact that this is a voltage regulator and that it is used in several vehicle ECUs.

I have also found a document that shows reference voltages at the Pins of the L9170 of an ECU. But I don't know if this information is correct.

Pin 1 - +5V

Pin 2 - +12V

Pin 3 - +5V

Pin 4 - +5V

Pin 5 - +5V

Pin 6 - GND

Pin 7 - No information

Pin 8 - +5V

Pin 9 - No information

Pin 10 - No information

Pin 11 - + 12V

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Can you please let me know if you have any clue on how to diagnose this components? Anything will be helpful and I really need to sort this out.

Best regards,

[Tesla DeLorean · Accepted solution]

>>.. it seems that there is no datasheet or any info available regarding this component.

This is a custom component built for Magneti Marelli, ST can't provide materials on parts built for private clients.