Lighting device and automotive light comprising said lighting device
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United States of America Patent
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Jun 6, 2017
Grant Date -
Sep 8, 2016
app pub date -
May 23, 2014
filing date -
May 23, 2013
priority date (Note) -
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Abstract
A lighting device of an automotive light comprising light sources supplied by a drive current and a control device comprising a control stage generating a control signal on the basis of the difference between the drive current and a predetermined reference current, and a driving stage, which adjust the drive current on the basis of the control signal. The driving stage comprises a voltage stabilizing device, which supplies, in a first operation condition, a stabilized voltage on an intermediate node thereof, a first transistor having a control terminal receiving the control signal; and a second transistor having a control terminal connected to the intermediate node to be set, in the first operation condition, to the predetermined stabilized voltage), a first terminal connected to the light source, and a second terminal connected to a second terminal of the first transistor.
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