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想做一款充电宝，输入电源支持9V输入，充电电流大于3A。输出支持QC2.0协议9V/1.67A。最好是同时可支持I2C、内置3.3V-LDO。带过温过流过压保护等。
在TI上找了一圈，BQ25703A太贵了，而且还得加一颗电量计。求大神们推荐一下，谢谢！
