| 发明名称 | Automobile LED driving device | ||
| 摘要 | An automobile LED driving device includes a current setting portion to set multiple reference currents independently from one another for multiple respective current setting resistors connected externally, a current controller to select one of the multiple reference currents based on a control signal provided from outside, and an output transistor to control an output current to an automobile LED connected externally based on the reference current selected by the current controller. | ||
| 申请公布号 | US9148915(B2) | 申请公布日期 | 2015.09.29 |
| 申请号 | US201414271625 | 申请日期 | 2014.05.07 |
| 申请人 | Rohm Co., Ltd. | 发明人 | Aoki Akira;Miyamoto Koji |
| 分类号 | H05B37/02;H05B33/08 | 主分类号 | H05B37/02 |
| 代理机构 | Fish & Richardson P.C. | 代理人 | Fish & Richardson P.C. |
| 主权项 | 1. A light emitting device driving device comprising: a current setting portion to set a reference current for a current setting resistor connected externally to the light emitting device driving device, an output transistor to control an output current to a light emitting device connected externally to the light emitting device driving device based on the reference current, a controller to generate an operation control signal according to a detection of an abnormality and to perform an external input/output process for the operation control signal, and a current controller to control a current supply to the light emitting device based on the operation control signal. | ||
| 地址 | Kyoto JP | ||