Part Number: BQ32000
Hello,
Could you help me with below questions?
1. what's the difference between bq32000 and bq32002?
2. Vback can connect a super cap instead of battery according to datasheet. But how to charge the super cap at Vback? Does the IC can charge the super cap from VCC?
3. How to calculate the charge current and charging time of charge the super cap?
4.How to select the super cap? for example, calculate how long the super cap can support the RTC when VCC is down?