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BQ24040关于PRE-TERM脚预充电外接电阻问题?

Other Parts Discussed in Thread: BQ24040

BQ24040规格书第7页关于PRE-TERM脚,外接对地电阻1K-10K之间。

Expected range of programming resistor is 1k to 10k

1. 如果设计的锂电池参数200mAh,20-45度充电0.5C;10-20度充电0.3C;0-10度充电0.2C;电流减小到 0.02C=4mA 为充电截止电流。

那么设计充电电流为0.45C=0.45*200=90mA可以吗?

此时PRE-TERM对地外接电阻R=200Ω/%*(4mA/90mA)=888Ω ,可以吗?但是

BQ24040规格书PRE-TERM对地电阻在1K-10K之间,888Ω小于1k 符合BQ24040设计要求吗?

2. BQ24040规格书关于计算PRE-TERM对地电阻计算中KTERM有两种情况,

一般用哪种情况的KTERM值?下图中两种情况区别是?