Patent ID: 11871492
Assignee: ROHM CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 16:
17. The light emitting element drive device according to claim 16, wherein
the drive reference voltage generation circuit includes a first switch inserted in series between an output terminal of the current generation circuit and the internal resistor, and a second switch inserted in series between the output terminal of the current generation circuit and the specific external terminal,
the light emitting element drive device further includes a switch control circuit configured to control the first switch and the second switch, and
in the first mode the switch control circuit turns on the first switch and turns off the second switch, so that the predetermined current is supplied to the internal resistor, while in the second mode the switch control circuit turns off the first switch and turns on the second switch, so that the predetermined current is supplied as the second mode current to the specific external terminal.