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LTC4269-1

Category: Hardware
Product Number: LTC4269-1

The LTC4269-1 Data Sheet (42691fc), Typical Applications show a 100V, 1A Schottky diode (B1100) between Vportn and Vneg.

The Eval board user's Guide (Demonstration Circuit 1335B-C) does not include this diode.

Both circuits seem to work.

What is the purpose of this diode?

Thanks.

Hello,

It is used to protect the input from overvoltage.

Regards,

Jhun

  • How?

    One would suspect that the SMAJ58A between Vportn and Vportp would handle any over voltage at the input.

    I suspect that it is to protect the body diode of the internal MOSFET between Vportn and Vneg from an over-current condition.