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你好！请教一些问题可以吗？bq24610是降压芯片，那有没有类似bq24610的升降压芯片呢？我用于5S锂电池充电，电压在21V电流在6A左右。外接输入电压可能是12V或者19V或者24V。如果我用bq24610的话又要在前面加一块升压电路吗？
