电池用的是35mA的,快充电流0.5C,
开始选用的是24040,但fast charge时充电电流最小只能到50mA,
24232充电电流可以到25mA,但不接负载时待机电流在4uA左右,待机功耗太大了,
求推荐一颗充电的芯片,谢谢!
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你好
实际上BQ24040是可以支持10mA充电的,在规格书page7有说明,之所以在引脚描述中说50mA到1A,是因为如果小于50mA充电,预充就不能满足电流精度,之前我有使用BQ24040用到17mA充电,CC精度是可以保障的。
如果对体积空间没有太高要求,LM3622可以考虑。
http://www.ti.com/lit/ds/snvs043b/snvs043b.pdf