I'm developing a power source based on a solar panel and a battery.
Basically, during night or rainy days the power comes from the battery. At sun light the power comes from the solar panel (extra power recharge the battery).
During my search for a buck-boost converter (example TPS63024x) and a linear charger for the battery, I found bq2512x.
Looks like bq2512x has all I need (linear charger, regulated output, load switch and battery voltage monitor), but I'm a quite confusing about the circuit.
- Solar panel is this one -- 5.5V - 90mA
- Battery is this -- 3.7V - 1200mAh
- My device is a Sensor with a Wifi transmitter. Consumes 3.3V - 15mA (200mA peak during 2 seconds, every 5 minutes)
My question is: If my understanding is correct, can someone explain to me the minimum requirements for bq2512x work as I need? Or maybe post a sample circuit with a buck-boost converter and a battery charger in a answer, so we can discuss about it.