CN204482103U - A kind of low voltage difference LED drive circuit - Google Patents
A kind of low voltage difference LED drive circuit Download PDFInfo
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- CN204482103U CN204482103U CN201520172368.6U CN201520172368U CN204482103U CN 204482103 U CN204482103 U CN 204482103U CN 201520172368 U CN201520172368 U CN 201520172368U CN 204482103 U CN204482103 U CN 204482103U
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- led
- drive circuit
- low voltage
- voltage difference
- input power
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Abstract
The utility model discloses a kind of low voltage difference LED drive circuit, comprise direct-current input power supplying, LED, driving chip, resistance is set, described driving chip pin comprises VIN, LED, ISET, GND, described direct-current input power supplying is connected with VIN, LED positive pole, LED negative pole is connected with LED, described direct-current input power supplying with resistance is set, ISET is in series, described GND ground connection.A kind of low voltage difference LED drive circuit that the utility model provides, utilizes the design arranging resistance, and driving LED lamp does not need accurate especially constant current value, LED can not be burnt out.
Description
Technical field
The utility model relates to a kind of low voltage difference LED drive circuit, belongs to LED Driving technique field.
Background technology
At present, existing LED lamp drive circuit all wishes very constant electric current, but can bring circuit meeting more complicated like this, and cost also can rise.If by circuit design, even if electric current is not very accurate, still can safe driving LED lamp, this is the problem that will solve.
Utility model content
Object: in order to overcome the deficiencies in the prior art, the utility model provides a kind of low voltage difference LED drive circuit.
Technical scheme: for solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of low voltage difference LED drive circuit, comprise direct-current input power supplying, LED, driving chip, resistance is set, described driving chip pin comprises VIN, LED, ISET, GND, described direct-current input power supplying is connected with VIN, LED positive pole, LED negative pole is connected with LED, described direct-current input power supplying with resistance is set, ISET is in series, described GND ground connection.
The described resistance that arranges is set to metalfilmresistor.
Described direct-current input power supplying is set to 2.7-6V.
Preferably, described driving chip is set to CN5611.
Beneficial effect: a kind of low voltage difference LED drive circuit that the utility model provides, utilizes the design arranging resistance, and driving LED lamp does not need accurate especially constant current value, LED can not be burnt out.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figure 1, a kind of low voltage difference LED drive circuit, comprise direct-current input power supplying 1, LED 2, driving chip 3, resistance 4 is set, described driving chip 3 pin comprises VIN, LED, ISET, GND, described direct-current input power supplying 1 is connected with VIN, LED 2 positive pole, LED 2 negative pole is connected with LED, described direct-current input power supplying 1 with resistance 4 is set, ISET is in series, described GND ground connection.
The described resistance 4 that arranges is set to metalfilmresistor.
Described direct-current input power supplying 1 is set to 2.7-6V.
Preferably, described driving chip 3 is set to CN5611.
Driving chip pin: VIN: voltage input end, LED:LED incoming end, ISET: electric current arranges end, GND: earth terminal.
The above is only preferred implementation of the present utility model; be noted that for those skilled in the art; under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (4)
1. a low voltage difference LED drive circuit, comprise direct-current input power supplying, LED, it is characterized in that: also comprise driving chip, resistance is set, described driving chip pin comprises VIN, LED, ISET, GND, described direct-current input power supplying is connected with VIN, LED positive pole, LED negative pole is connected with LED, described direct-current input power supplying with resistance is set, ISET is in series, described GND ground connection.
2. a kind of low voltage difference LED drive circuit according to claim 1, is characterized in that: the described resistance that arranges is set to metalfilmresistor.
3. a kind of low voltage difference LED drive circuit according to claim 1, is characterized in that: described direct-current input power supplying is set to 2.7-6V.
4. a kind of low voltage difference LED drive circuit according to claim 1, is characterized in that: described driving chip is set to CN5611.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520172368.6U CN204482103U (en) | 2015-03-26 | 2015-03-26 | A kind of low voltage difference LED drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520172368.6U CN204482103U (en) | 2015-03-26 | 2015-03-26 | A kind of low voltage difference LED drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204482103U true CN204482103U (en) | 2015-07-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520172368.6U Active CN204482103U (en) | 2015-03-26 | 2015-03-26 | A kind of low voltage difference LED drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204482103U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105120586A (en) * | 2015-10-08 | 2015-12-02 | 周玉林 | Ultralow-dropout LED flashlight |
-
2015
- 2015-03-26 CN CN201520172368.6U patent/CN204482103U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105120586A (en) * | 2015-10-08 | 2015-12-02 | 周玉林 | Ultralow-dropout LED flashlight |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160815 Address after: Dagang Street Baiyun Lake Street Baiyun District of Guangzhou City, Guangdong province 510000 No. 119 3 floor and 5 floor Patentee after: Guangzhou run Photoelectric Technology Co., Ltd. Address before: Zhenjiang City, Jiangsu Province, 212000 Jingkou District Road No. 301, building 206, room 2141 Patentee before: Li Zhe |