Invention Grant
- Patent Title: Light emitting diode (LED) driving apparatus, lighting apparatus, and current control circuit
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Application No.: US15138688Application Date: 2016-04-26
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Publication No.: US10285240B2Publication Date: 2019-05-07
- Inventor: Nam Su Koo
- Applicant: SAMSUNG ELECTRONICS CO., LTD.
- Applicant Address: KR Suwon-si
- Assignee: SAMSUNG ELECTRONICS CO., LTD.
- Current Assignee: SAMSUNG ELECTRONICS CO., LTD.
- Current Assignee Address: KR Suwon-si
- Agency: Sughrue Mion, PLLC
- Priority: KR10-2015-0113898 20150812
- Main IPC: H05B33/08
- IPC: H05B33/08

Abstract:
An apparatus for driving a light emitting diode (LED) includes a current control circuit connected to an output terminal of a plurality of LEDs and configured to generate a first voltage based on a sensing voltage detected from the output terminal of the plurality of LEDs, the current control circuit including at least one comparator configured to control a current flowing in the plurality of LEDs based on a result of comparison between the first voltage and a reference voltage; and a protective circuit configured to block the current flowing in the plurality of LEDs by stopping an operation of the at least one comparator in response to an increase of the sensing voltage.
Public/Granted literature
- US20170048935A1 LIGHT EMITTING DIODE (LED) DRIVING APPARATUS, LIGHTING APPARATUS, AND CURRENT CONTROL CIRCUIT Public/Granted day:2017-02-16
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