what is the minimum input current for this device? if it's just idling with a 5v input and a 12 v output, how much current will it need?
1180969
First- I'd like to note that the chip on this module I just received is a XL6009E, not a LM2577. Pin2 for the XL6009 is a standby pin (low to stdby) but if you do so, the input current goes up significantly, so think it is tied to Vin on the board.With 5Vin, 12Vout: Iin = 20mA under no load. 5Vin, 24V out: Iin=26mA. Driving a 24V solenoid with at 24V output, 5Vin, power efficiency is just 74%.
1180970
Reading the spec sheet for the LM2577, looks like the quiescent current is about 10 mA. The actual input current when under any kind of load, of course, will depend upon the output power. For example, if you're using 5v in and getting 10v out, the duty cycle current on the 5v source would be a little over twice the amount you're drawing out at 10v. If you're using a standard USB connection as your source, in this example you'd be limited to about 200 mA on the output side.
1397674
Good Question, Is it 12 volts? (probably) If so it should work. Was there a unit on it originally? If so, it should just "drop in". Mine was a direct replacement so I had no issues.Good Luck! cheers, Dave
827281
This is acute little charger. It says the maximum current output is 500 ma. That's probably at 6 volts which means the max at 12volts will be about 250 ma. Not really powerful but if you are not in a hurry and you have small lead acid batteries this works well. Hope this helps.
1684397
And the sticker reads: 2.0A for BOTH the 5V and 12V output ratirings. Really a neat product. I will be fixing a friends laptop, just pulling it out of the case, setting this up and using their HDD as an external and it has always worked. This is my third order of the same product from the same source, always the same professional response. Hope this helps you. Will
2189
thank you all for your response. I now understand what I need, at least 8 amps power supply ...enjoy your weekend!!!! :_)
1716348
Try running something not as power demanding and see if it works. Do you have a multimeter? What type/capacity battery is it? How are you charging the battery?
1238814
I'm not sure. Read the spec sheet. I sent it back as it had such a high current draw when idling.
2005815
It draws very little current. I have driven 2 off usb power. If running from a micro controller such as an Arduino, you will need to connect to 4 I. O. Lines and 5v and gnd. Do a search on Google. There are plenty of tutorials on running it as well as some libraries that can be downloaded.
646365
I had a spare 12V, 3.75A from a Samsung monitor lying around so that's what I used. Almost any 12v power brick will do though.
1029750
It has a GFI on the output but nothing for input, I installed a fuse on the 12V input.
1545998
Contact the seller, they are very very helpful, and purchase the 12V splitters for your needs. Just be sure that youdon't exceed the capicity for the power supply.
1823892
Don't believe what the manual and what is molded into the base about the power supply requirements. I've tried both 200 mA and an 800 mA 9V power supplies and the 200 mA doesn't supply enough power to run the device. The 800mA does. I'm not sure what the actual minimum Amp rating that will work but you definitely need more than 200 mA.
657326
The 12v input line is not regulated, thus it is limited by the power supply feeding the picopsu. I've used this in a number of setups that draw 20+ amps on the 12v line without a single problem years later. Now as for the 5v and 3.3v rails, that is another story.
2133553
It depends on what you're feeding it with. Recall that voltatage x current = power. The max peak power of the device is 3000W. If you're using an alternator, go with a 200A fuse--at 14.4V bus voltage, your current will be 208A. Otherwise, go with a 250A for 12V. The absolute max tolerable current is 285A for the 10.5V minimum input, so anything bigger than that is a waste.
2222423
Have a look at the back of your power brick (you may need magnifier, I do), it will have an output value saying ___ VDC. If that is 12 or 19 then you should be good to go.
1269605
I don't know the maximum output current since this one does not work at all.
2157790
I believe the minimum power supply is 500W. I use a 550W and haven't had any problems.