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寻求推荐一款输入电压3.3V，输出电压可调（期望电压1.8V和1.9V），电流400mA的LDO，
用于TMS320F2811的core电源
寻求一款常用的，易于购买的，封装较小的
TLV1117
TPS77601, 带EN和PG，适合做时序控制
TLV1117最常用的，性价比最高的。
TLV1117LV，推荐带LV后缀的
你好，
输出电压为什么要可调，直接用TLV1117LV的1.8V输出的版本就好了，比1117便宜很多，谢谢。
