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您好：
需选择一款电源管理芯片，响应迅速，即突然有高功率负载时，输出电压仍能保持稳定。
输入电压范围4.5V~20V，可输出3.3V及以上电压，输出电流大于100mA。
封装尽可能小。
谢谢
您好，
可参考以下两个芯片
TPS54320
LM61495
