Take an energy source, an energy collector, an energy converter and an energy storage unit - that's all you need to operate low-power devices such as wireless IoT devices, intelligent remote controls or various consumer electronics independently of supply networks or external charging processes. With the NEH2000BY power management circuit, Nexperia offers such a solution for the low-power range.
NEH2000BY from NexperiaSunor artificial light (lighting) are the energy sources for solar cells which, depending on the lighting conditions, provide voltages to charge batteries for powering electronic devices.
In order to efficiently convert the electrical energy provided by the solar cells, which can vary greatly depending on the time of day, into battery charge, the NEH2000BY (16-pin QFN 3 x 3 mm) power management circuit (PMIC) from Nexperia uses a so-called hill-climbing algorithm, which ensures that the battery is charged by the solar cell with the maximum possible power. This operating point is recalculated every 0.7 seconds so that the circuit adapts very dynamically to changing environmental conditions. According to the manufacturer, the collected power of the energy source can vary between 35µW and 2mW.
