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12VDC输入能给12V铅酸电池充电吗?UC2909或者BQ24450

Other Parts Discussed in Thread: BQ24450, BQ25700A, BQ25703A

目前有一个方案,是12V DC输入,需要给12V  7Ah铅酸电池充电,请问可以用UC2909或者BQ24450吗?12V的铅酸电池充满电时14.5V左右

UC2909或者BQ24450带升压充电功能吗?

  • Hi

        BQ24450是线性充电器,属于降压不能生压。

       UC2909也是降压的。

       按照你的条件,最好是选择升降压的,原因是输入在开始充电时比电池电压高,充满后低于电池电压。

       你可以选择BQ25700A: http://www.ti.com.cn/cn/lit/ds/symlink/bq25700a.pdf  或者BQ25703A     (SMBus (bq25700A) or I 2C (bq25703A) port for optimal system performance and status reporting)