The TPS40210-Q1 is used in an automotive 12V battery flyback circuit which needs to be disabled for low standby power mode operation.
In this standby mode, the TPS40210-Q1 will be disabled by pin 3 (DIS / /EN) pulled high, but with 12V still applied to VDD.
What is the input current for the RC pin?
This factors into the overall budget of <100uA on 12V battery during standby mode.