| 摘要 |
PROBLEM TO BE SOLVED: To make voltage loss small and reduce a load on user-side device for switching on/off between an output terminal and a common terminal, and make current control operation such as overcurrent protection exact and stable, in a semiconductor integrated circuit having an output terminal, a control terminal and a common terminal which switches on/off between the output terminal and the common terminal by the controlled voltage given between the control terminal and the common terminal, detects the current which runs between the output terminal and the common terminal, and executes current control such as overcurrent protection. SOLUTION: A reference voltage VE which is to be the operation reference of current control is generated by making use of the difference in the threshold voltages between the gate and the source of a pair of MOS transistor Q3 and Q4. |
