I am trying to build a Cell phone charger from a solar cell. Does anyone know how to step down 2Watts to 800mA?
you question is missing multiple important pieces of information.
Although I could speculate a bit in what you are trying to do and how to solve your problem, the fact is that there are mjultiple ways to solve this problem.
For example using a buck regulator and adding current limit or using a battery charger IC like the ADP5065 if current and voltages within your range.
You may want to consider talking to some of your collegues and come up with some options for us to comment on, especially if they involve Analog Devices ICs.
This forum is designed to answer questions related to particular ADI products, so feel free to post a question related to a particular device and we will try to asnwer.
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