I'm hoping to find a product that can take in the weak power from an RF rectifier CKT and dump that energy either into a super capacitor or battery. I also hope that the same solution can handle a much higher power solar cell. Do you have such a focused product or application note that I can look at? Is it possible one IC can do both? How much voltage and curent from either source will vary quite a bit except the target solar solution will come in about 1.8V @ mA's.