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VN9D5D20F what does "Reverse battery through self turn-on" mean?

Dazai
Associate III

The datasheet for the VN9D5D20F lists "Reverse battery through self turn-on" as a bullet point under "Protection", while the VN9D5D20FN datasheet does not.  This appears to be one of the major differences between the two parts, but I do not understand what it means and was unable to find a description in the VN9D5D20F datasheet.

What does "reverse battery through self turn-on" do?

VN9D5D20F:

Dazai_0-1730761228267.png

VN9D5D20FN:

Dazai_1-1730761274498.png

VN9D5D20F - 4-channel high-side driver with 24-bit SPI interface for automotive applications - STMicroelectronics

VN9D5D20FN - 4-channel high-side driver with 24-bit SPI interface for automotive applications - STMicroelectronics

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