The supply voltage Vin to this PMIC will be through battery voltage 4.2V(max) or bench supply 5.2V(max) voltage. This power Vin will be given toTPS65218's IN_BIAS pin. There is a pin named INT_LDO available, which is 2.5V. This is for PMIC internal biasing. I would like to know, who is powering PMIC I2C. Is IN_BIAS or INT_LDO powering I2C?
