| 摘要 |
PROBLEM TO BE SOLVED: To provide a current detection circuit and a protection circuit capable of carrying out a current detection in consideration of temperature characteristics, which are of current detection circuits and protection circuits for converting input current into voltage by using a current-voltage converting element, comparing the converted voltage with a reference voltage, and outputting an output signal in accordance with the resultant magnitude relation. SOLUTION: The current detection circuit (11) has a current-voltage converting element (RS) which generates a voltage in accordance with its input current; a reference voltage generating circuit (41) which generates a reference voltage (Vref); and a comparator (42) which outputs an output signal in accordance with the magnitude relation between the voltage (Vs) obtained by the current-voltage converting element (RS) and the reference voltage (Vref) generated by the reference voltage generating circuit (41). The reference voltage generating circuit (41) is configured to be set by a element structure which provides the reference voltage (Vref) with a temperature characteristic being previously set. COPYRIGHT: (C)2005,JPO&NCIPI
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