My Board has a MCU and a Motor driver IC for driving motor, I have a 5V to 3.3V regulator for powering the MCU and the motor is Powered by 5V. I want the MCU to be powered by the A7 lite Tablets power when there is not samsung adaptive charger connected to the other end of my board. If the Adaptive charger is connected then I want to chager the A7 lite Tablet as well as power the MCU from adapter's power.