| 摘要 |
<P>PROBLEM TO BE SOLVED: To make an input of a power switch element low potential, and make the power switch element off to be protected from a destroy when an excessive current and a short-circuit current flow, with respect to a power switch element which drives a load of a lamp, an LED, and an inductor. <P>SOLUTION: Two resistors are connected to a low potential side (ground potential) from an IN terminal. After an IN terminal voltage of a power element rises up to a potential at which a load 17 can be sufficiently driven, a switch element 6 is turned on, a detection of a current flowing through the power switch element is made possible. When an excessive current and a short-circuit current flow, a protection function works, and the load 17 can be driven according to a high/low signal from the IN terminal regardless of an application of power 9 and an order of a signal from the IN terminal. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
