JAJU793 October 2020
Standby current testing for the design requires removing the OR gate in order to set the enable pin low and put the LM74810 device into shutdown mode. Once the OR gate is removed and the LM74810 is placed into shutdown mode, the current measured during standby was roughly 900µA. A large portion of the current is attributed to the typical quiescent current of the INA302 device. Once the INA302 device was removed from the board, the standby current was roughly 17µA.
To achieve the standby current values required it is recommended to use a LDO that has an enable function to easily power off the INA302.