需要如下规格的直流变压IC
DC-DC 芯片,参数要求如下:
1、输入耐压23V以上,输出5V;
2、效率高,90%以上;
3、封装SOP/DIP,尽量小;
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可以考虑 TPS40057 http://www.ti.com/product/tps40057
主要规格如下:
输入耐压最大到40V;
输入电压 0.7V 到 35V;
选择好的管子,效率可以到90%