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您好：
我想找个pin-to-pin的电源芯片 5V输入，固定1.8V输出，输出电流200mA左右，管脚定义如下：1：EN 2：GND 3：SW 4: IN 5：OUT
能否推荐
要提供下具体的封装，如果有原料料号更好。
您好，根据您给出的要求以下两颗能满足您的要求。
TPS62202 Input voltage range 2.5V to 6.0V，Maximum output current 300mA，Vout=1.8V, Package: 5Pin SOT-23
http://www.ti.com.cn/cn/lit/ds/symlink/tps62202.pdf
TPS62222 Input voltage range 2.5V to 6.0V，Maximum output current 400mA，Vout=1.8V, Package: 5Pin SOT-23
http://www.ti.com.cn/cn/lit/ds/symlink/tps62222.pdf
能否告知原料的料号及封装，以及更多应用相关指标信息，以便为您进一步推荐。谢谢！
选用TPS62222,可以满足你的设计要求
TLV62565,5脚是FB
