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LMC555: 想用555定时器做BUCK DC-DC上EN脚的200MS延时

Part Number: LMC555

想用555定时器做BUCK DC-DC上EN脚的200MS延时,不知道怎么设计,请帮忙指导一下是否合适?另外有没有更好的芯片可以推荐这个应用