CURRENT DETECTION CIRCUIT AND POWER SUPPLY CONTROL DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a current detection circuit and a power supply control device that have a simple configuration.SOLUTION: A current detection circuit 10A includes an IC 21 for detecting a load current IL supplied to a load L on the basis of a detection current Is2 output from a selected switching element 16B selected from a plurality of sense MOSFETs 16A-16C. As to the selected switching element 16B, a sense MOSFET capable of reducing an error in the detection of the current supplied to the load resulting from a temperature characteristic of a ratio of a shunt current Im1-Im3 to a detection current Is corresponding to the shunt current Im1-Im3, with a temperature characteristic of the shunt current Im1-Im3 is selected as the selected switching element.