| 摘要 |
A switching regulator includes a first switch, an inductor, a second switch, a control circuit to control a switching operation by switching the first switch and switching the second switch complementally to the first switch, a reverse current protection circuit to shut off a current through the second switch to prevent a reverse current from an output terminal toward the second switch, and a soft-start circuit to cause the control circuit to perform a soft-start operation in which the output voltage is being increased gradually during a time period from a start-up to a predetermined elapsed time. The soft-start circuit causes the reverse current protection circuit to stop a shutoff operation of the current through the second switch when a generation or an indication of the reverse current is detected during the soft-start operation instructed by the control circuit.
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