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.

主权项

1. An automobile LED driving device comprising:
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, and a protect bus controller to generate a protect bus signal according to a detection of an abnormality and to perform an external input/output process for the protect bus signal, wherein the current controller controls a current supply to the automobile LED based on the protect bus signal.