Analog Devices has a new power management chip designed for energy harvesting power applications. It can convert power from a solar cell and store the energy is a super capacitor, and supply power from a supplementary power source like a battery. The chip, ADP5090, has a 320 nA quiescent current, can operate from 80 mV to 3.3 at the input, and supply 2.2 to 5.2 V to a load.