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BQ24040预充电的时候CHG脚不拉低吗?

Other Parts Discussed in Thread: BQ24040用BQ24040给单节锂电池充电,电池没电的情况下,要充电几分钟CHG脚才会导通,LED灯亮。如果电池没有放完电的情况下比较正常,插上电源充电 CHG就直接拉低了,LED亮。 那么BQ24040在预充电的时候,CHG不导通的吗?有什么办法让它在预充电的情况下也导通? 电路电阻见附件