BD2204GUL is high side switch IC that has built-in 2circuits of MOSFET. Switch has achieved 120mO(Typ.) on-resistance. 3.3V power supply and 1.8Vpower supply for memory card can be selected by SEL terminal. Moreover, it has built-in simultaneous-on prevention function at power switching, reverse-current protection function to prevent reverse-current from output terminal to input terminal at power-off, and discharge circuit to discharge electricity in output terminal.