寻输入电压4.5V-40V,输出5V5A的电源芯片,确保输入7V电压,输出5V5A能够启动,例如TPS5450除去内部开关管的芯片,驱动外部开关管的,8脚优先
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楼主可以看看LM25085 应该可以满足您的要求,我们也有内部集成MOS管的TPS54560
这几款芯片参考下,但不是8脚的,希望对你有帮助,LM25118,LM25118-Q1,LM5118,LM5118-Q1
你可以找下,LT TPS MPS LM 等DC-DC的IC 国内的你找下XL 看有没有你要的东东