Semiconductor integrated circuit device for providing series regulator

A semiconductor integrated circuit device comprising:

• a second power supply circuit that includes an internal output transistor, and that provides a second series regulator;
• and
• a plurality of terminals that includes
• (i) a voltage output terminal for outputting a power supply voltage from the internal output transistor of the second power supply circuit;
• and
• (ii) a high electric potential side power supply terminal and a low electric potential side power supply terminal for supplying electric power to the second power supply circuit, the electric power being used as operating power of the second power supply circuit, wherein
• at least one of the plurality of terminals, the one which is arranged adjacent to the voltage output terminal, provides a high impedance terminal or an input and output current limit terminal when the second power supply circuit is in an operating state.

An electric apparatus comprising:

• an external output transistor to be coupled with an external unit;
• and
• a semiconductor integrated circuit device for controlling the external output transistor, the semiconductor integrate circuit device including
• (i) a first power supply circuit that includes an output circuit, and that provides a first series regulator in cooperation with the external output transistor,
• (ii) a second power supply circuit that includes an internal output transistor, and that provides a second series regulator, and
• (iii) a plurality of terminals, wherein:
• the plurality of terminals includes
• (i) a control signal output terminal for outputting a control signal from an output node of the output circuit of the first power supply circuit to a control terminal of the external output transistor,
• (ii) a voltage output terminal for outputting a power supply voltage from the internal output transistor of the second power supply circuit, and
• (iii) a high electric potential side power supply terminal and a low electric potential side power supply terminal for supplying electric power to the first and second power supply circuits, the electric power being used as operating power of the first and second power supply circuits;
• at least one of the high and low electric potential side power supply terminals is arranged adjacent to the control signal output terminal and defined as a first terminal;
• short-circuiting between the control signal output terminal and the first terminal short-circuit causes the external output transistor to switch into an off state;
• and
• at least one of the plurality of terminals, the one which is arranged adjacent to the voltage output terminal, provides a high impedance terminal or an input and output current limit terminal when the second power supply circuit is in an operating state.