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BQ24133: 关于BQ24133预充电流和终止充电电流不准确的问题

Part Number: BQ24133

你好,我们有个产品采用BQ24133充电芯片,充3节串联后11.1V的18650电池。按公式ICHARGE=VISET/20*RSR,设置充电电流为2.675A
预充电电流按IPRECHARGE= VISET/200*RSR公式,设置为267.5MA.但实际测试时的预充电电流只有158MA左右,为什么?