按钮LED灯具有自动关闭功能

你好@dantopolsky，
很抱歉长期拖延回到你身边。
这需要一些挖掘来看看可能的选择。
我的第一个想法是使用手动延时继电器，但是有限的电压选项和价格使这些通常是不可选择的。
另一种选择可能是555定时器解锁的自锁继电器。
你仍然会有更大的电流，但只在使用期间。
我的一位工程师建议查看以下部分。
TPL5110DDCT或TPL5111DDCT会有一些额外的电路，但是你看的是35nA。
您可以查看一些其他部分。
MC14541BDG
MC14536BDWR2G
谢谢
- 罗伯特·



以下为原文

        Hello @dantopolsky,
Sorry for the long delay in getting back to you. This took some digging around to look at possible options. My first thought was to go with a manual time delay relay, however limited voltage options and price make these generally a non-option. Another option maybe a latching relay that your 555 timer unlatches. you would still have the larger current, however only during use.
One of my engineers suggested looking at the following parts. TPL5110DDCT or TPL5111DDCT There would be some additional circuitry, however you are looking at 35nA.
Some additional parts you could look at.
MC14541BDG
MC14536BDWR2G
Thank you
-Robert

你好@dantopolsky，
我不知道他们正在使用的芯片，所以很难发表意见。
当制造商（可能是）不提供具有电气规格的完整数据表时，这更加困难。
很难说它是否符合你要求的规格。 
该板似乎与Adafruit的1528-1917-ND板类似。当然，它们似乎没有使用完成部分。
对于您的应用程序，它不是必需的。
1528-2379-ND将是你可以看到的另一块板。
虽然确实中国芯片本身的价格略低（取决于数量）但我认为当它们来自您可信赖的制造商以及将支持这些部件的经销商时，您会发现这些部件的质量往往更高。
。



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        Hello @dantopolsky,
I am not aware of the chip they are using so it is hard to give an opinion. It is even harder when the manufacturer (who ever that may be) does not give a complete data sheet with electrical specs. Hard to say if it meets the specs you are asking for.
  
The board appears to be similar to the 1528-1917-ND board from Adafruit Of course they do not appear to be using the done portion. For your application it would not be needed. 1528-2379-ND would be another board you could look at.
While it is true the price for the chinese chip itself is slightly less (depending on volume) I think you will find the parts tend to be of higher quality when they come from a manufacturer you can trust and a Distributor that will stand behind the parts.

@dantopolsky
我还可以推荐5555可编程定时器，如1727-5961-1-ND。
它确实需要一些外部元件才能正常工作，但它确实允许时序选择，并且在闲置~100uA时具有高功效，它还具有宽工作电压范围，这有利于电池操作。
下端可能是输出引脚可提供的最大输出电流约为20mA，因此如果LED消耗的电流超过此值，则需要一个开关器件。
还有一个选择，
谢谢，
里德L.



以下为原文

        @dantopolsky
I could also recommend a 5555 programmable timer such as 1727-5961-1-ND.
It does require some external components to operate properly, but it does allow for timing selection and is power efficient while in idle ~100uA, it also has a wide operating voltage range, which is beneficial for battery operations.
The down side may be the maximum output current that an output pin can provide is ~20mA, so you would need a switching device if the LED draws more than that.
Just one more option,
Thanks,
Reid L.

谢谢罗伯特！
是的，使用那个便宜的部分肯定会让我感到紧张。
Adafruit董事会看起来会尝试试用TPL5110。
我会尝试一下。
你能告诉我哪种MOSFET最适合TPL5110驱动
RZM001P02T2L对吗？
那里有什么问题？



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        Thanks Robert!
Yes, using that cheap part definitely would make me nervous.  That Adafruit board looks like it will do the trick to try out the TPL5110.  I will try it out.   Can you tell me which MOSFET is best suited for the TPL5110 to drive <30mA of current into a LED?  I should be able to use the
RZM001P02T2L right?  Any concerns there?

谢谢里德！
5555看起来会起作用，但这对我的项目来说可能有些过分。
我会记住它。



以下为原文

        Thanks Reid!
The 5555 looks like it would work, but it’s probably overkill for my project.  I will keep it in mind.

@dantopolsky，
如果你正在寻找应该工作的芯片。
如果您正在尝试使用电路板进行快速测试，则不需要电路板，因为它们的DMG3415U-7安装在电路板上。
还有一个安装的LED将显示功能。



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        @dantopolsky,
If you are looking at just the chip that should work. If you are looking at trying the board for quick testing you will not need a fet as they have the DMG3415U-7 mounted right on the board. There is also a mounted LED that will show functionality.

谢谢罗伯特！
另外，你知道LED安装在电路板上的是什么吗？
此外，您是否可以推荐SMT LED套件来了解哪些LED选项？



以下为原文

        Thanks Robert!
Also, do you know what LED is mounted to the board?
Also, can you recommend an SMT LED kit to get an idea of what LED options are out there?

对不起，我无法确定它们使用哪个LED，因为它是绿色LED。
我们真的没有一个好的SMD LED套件来显示不同的选项。
我建议最好看看这个SMD LED列表，并确定您对电压，颜色，mcd和尺寸的要求，并从那里开始。
我知道列表很长但你可以使用很多不同的选项。
如果您有任何其他我可以提供帮助的问题，请与我们联系。
- 罗伯特·



以下为原文

        I am sorry I was not able to identify which LED they are using outside of the fact that it is a green led.
We really don’t have a good SMD LED kit for showing different options. Best I would suggest it to look at this list of SMD LEDs and decide what your requirements will be for voltage, color, mcd and size and go from there. I know the list is long but you can really use a lot of different options.
Let me know if you have any more questions I can help with.
-Robert