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US 2012/0074845 A1Published application
Automobile led driving device
AssigneeRohm Co., Ltd.
InventorsAkira AOKI, Koji MIYAMOTO
Life of this patent
Estimating the term…
Abstract
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.
Claims19
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.
Dependencies are inferred from the claim text.