1、BQ24630充电时间,在TTC脚只接电容的时候，
充电的时间设置，Cttc X Kttc,如下文档，这个KTTC怎么取值，如果我C是100nF,那我这个充电时间是多少？
Where CTTC (range from 0.047 μF to 0.47 μF to give 1-h to 10-h safety timer) is the capacitor connected from TTC pin to GND, and KTTC is the constant multiplier (1.4 min/nF).
