公开(公告)号：US20190387591A1

公开(公告)日：2019-12-19

申请号：US16480327

申请日：2018-01-31

Applicant: ROHM CO., LTD.

Inventor： Kenichi FUKUMOTO ,  Koji Katsura ,  Ryosuke Kanemitsu ,  Junichi ITAI ,  Nobuaki MATSUI ,  Seiji NAKASHIMA ,  Kouji Miyamoto

IPC: H05B33/08

Abstract: An LED drive circuit drives an LED module. The LED module has a light-emitting diode, and an identification unit having characteristic information relating to light-emitting characteristics of the light-emitting diode. The LED drive circuit includes a detection unit and a drive circuit. The detection unit is provided for detecting characteristic information, and generates a detection signal that corresponds to the characteristic information. The drive circuit generates drive current by a drive signal supplied according to the characteristic information based on the detection signal, and supplies the drive current to drive the light-emitting diode.