Patent ID: 11923834
Assignee: ROHM CO., LTD.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 1:
2. The switch device according to claim 1, further comprising:
an input terminal; and
a temperature protection circuit configured to be capable of outputting a temperature protection signal having a predetermined first or second logical value in accordance with temperature of the output transistor, wherein
the control circuit is configured to be capable of controlling the output transistor to an ON state or an OFF state in accordance with an input voltage at the input terminal,
the control circuit is configured to be capable of performing a temperature protection operation, in which the output transistor is switched from the ON state to the OFF state and is kept in the OFF state until a predetermined temperature protection cancel condition is satisfied, when a value of the temperature protection signal is switched from the first logical value to the second logical value during an ON designated period in which the output transistor is designated to the ON state on the basis of the input voltage, and
after the overcurrent protection operation is performed to limit the magnitude of the target current to the first current value or less when the magnitude of the target current reaches the first current value during the ON designated period, and when another overcurrent protection operation is performed via the temperature protection operation, the control circuit is capable of setting the upper limit current value to the second current value in the another overcurrent protection operation.