| 摘要 |
<p>PURPOSE:To prevent the destruction of a semiconductor integrated circuit due to the over-current by mounting an over-current limiting circuit on the semiconductor integrated circuit. CONSTITUTION:A current from the power source module of a semiconductor integrated circuit is supplied through a power source supplying line 11A to a current limiting means 12. The means 12, only when a control command S from a comparing means 13 is eliminated, supplies the current through a power source supplying line 11B to a current detecting means 14 without adding a limit to the current supplied from the line 11A. The means 14 passes the current to a power source supplying line 11C and detects a value I of the pass ing current. The current value I is inputted to the comparing means 13 and compared with a passing current limit value I0. When I is I0 or above, the means 13 outputs the limit command S to the limit means 12 and the means 12 limits the current supplied to a line 11B to the limit value I0.</p> |
