SLVSB64I November 2011 – March 2018 TPS65217
In the OFF state, the PMIC is completely shut down with the exception of a few circuits to monitor the voltage on the AC, USB, and PB_IN pins. All output power rails are turned off and the registers are reset to their default values. The I2C communication interface is turned off. The lowest amount of power is used in this state. To exit the OFF state, one of the following wake-up events must occur:
To go to the OFF state, set the OFF bit in the STATUS register to 1b, and then pull the PWR_EN pin low. In normal operation, the device can only go to the OFF state from the ACTIVE state. Whenever a fault occurs during operation, such as thermal shutdown, power-good fail, undervoltage lockout, or a PWR_EN pin timeout, all power rails are shut down and the device goes to the OFF state. The device stays in the OFF state until the fault is removed then a new power-up event occurs.