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350ma constant current led driver ic.
These drivers vary the voltage along an electronic circuit which allows current to remain constant throughout the led system.
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It is a high efficiency boost converter that operates from 1 or 2 nimh or alkaline cells and generates 350ma of constant current with up to 4v of compliance.
Higher current ratings do make the led brighter but if not regulated the led will draw more current than it is rated for.
It contains a 100mω nfet switch and a 130mω pfet synchronous rectifier.
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A constant current led power supply works by varying the voltage along an electronic circuit and thus allows the current to remain constant throughout the led system.
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The requirements of a lighting application often dictate what type of circuit can be used but if given the choice the most efficient way to run high power leds is using a series circuit with a constant current led driver.
A wide variety of constant current led driver 1w 350ma options are available to you such as lighting and circuitry design project installation.
Leds data sheets state what they require with the value given in amps a or milliamps ma.
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The drop across one white led is about 3 6 v and the drop across 4 of them is 4 3 6 v 14 4 v.
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The specs on its little plate said uout was 4 5 vdc.
That driver might work with 1 led but maybe not with 4 in a series.
You can also choose from 220v constant current led driver 1w 350ma as well as from 2 year constant current led driver 1w 350ma and whether constant current led driver 1w 350ma is 51 100w or 1 50w.
Running a series circuit helps to provide the same amount of current to each led.
The ltc3490 provides a constant current drive for 1w led applications.
1 a 1000 ma there are also variable and selectable output current drivers.
When using a constant current led driver observe the current requirements of your chosen led s.
The cc driver should then reflect that value output.
If so that might the current sensing mechanism you are looking to discover.
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