This is really a remarkable design by STMicroelectronics, the input voltage regulation is very good, it can handle input voltage starting from 180mV to 8V. This will be suitable for both indoor and outdoor sunlight.
There are many variants to consider - the sun, the capacity, the charge rate. For different applications, they can have different amounts of power which they can harvest and will be dependent on many factors
>> This is really a remarkable design by STMicroelectronics, the input voltage regulation is very good, i
ST has a really good design team. Just as they now control the MEMS gyro and XL market, they continue to show innovation sparks in many areas. This is a new growth market and it is evident that will create new solid business here.
I would think that the amount of power involved depends on the size and configuration of the solar panel and the quality and intensity of the light striking it. What is important about this device is that it efficiently handles the highly variable power that the panel is generating and saves it to battery storage with minimal loss in the conversion process.
I think we all understand that the amount of harvested power depends on sun exposure conditions...but the article talks about usage in wearable devices so presumably the size of the battery is constrained...having the spec of 70mA in that context is somewhat puzzling to me as watch sized solar battery will harvest orders of magnitude less than 70mA...Kris