Driving device
AssigneeRohm Co., Ltd.
InventorsShinji Kawata, Yoichi Kajiwara
Life of this patent
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Abstract
A driving device comprises a first transistor (B13), a second transistor (B14), and a resistance element. The first transistor (B13) has one terminal receiving a pulsed current and a control terminal connected to the one terminal. The second transistor (B14) has one terminal connected to at least one load, the other terminal connected to a reference potential together with the other terminal of the first transistor (B13), and a control terminal connected to the control terminal of the first transistor (B13). The resistance element is connected between the control terminal of the first transistor (B13) and the other terminal of the first transistor (B13).
Claims13
-2. (canceled)
An LED (light emitting diode) driving device, comprising:
- a controller configured to control an output segment that is used to generate an output voltage from an input voltage and supply the output voltage to an LED;
- an output current driver configured to generate an output current of the LED;
- and
- an LED short-circuit detection circuit configured to monitor a cathode voltage of the LED to perform an LED short-circuit detection.
Dependencies are inferred from the claim text.