Patent ID: 11870236
Assignee: ROHM CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  G | IPC B  G  H

Claim 8:
9. A semiconductor integrated circuit device comprising:
a transistor configured to conduct/interrupt a current path through which an output current flows;
a gate controller configured to generate a driving signal of the transistor in response to a control signal;
a temperature protection circuit configured to monitor a temperature difference between a temperature of the transistor and a temperature of another integrated circuit and to detect a temperature abnormality of the device; and
an overcurrent protection circuit comprising:
a current controller configured to control the transistor to limit the output current to a predetermined upper limit or less while keeping the transistor turned on; and
a duty controller configured to turn on/off the transistor at a predetermined duty ratio when the temperature protection circuit detects the temperature abnormality.