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Current Schottky diode between BATT and VDD4P2

Question asked by davidrabe on Apr 29, 2014
Latest reply on Apr 29, 2014 by igorpadykov

The IMX28AEC Technical Data PDF says that "Application should include a Schottky diode between BATT and VDD4P2", but it didn't mention any current rating.

In Figure 8 of the AN4199 AppNote the diode is also shown. Although the MBR120VLSFT1G has a maximum rated current of 1A, I think that the diode is only needed for biasing the internal VDD4P2 circuit. Thus, the current would be theoretically negligible.

Does anybody know something more detailed about it?