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恒压:VCCIN--------PMOSFET-------------VCCOUT
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OP or Comparator-------Direct or Divider
6 o( v: P, `& p: t( u8 e -------Ref voltage
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VCCIN---LOAD------NMOSFET-------------Rsen---GND B( v$ g3 w) s& ]% i# @. Y
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/ j7 ~9 }5 ?8 S OP or Comparator----Direct or amplify
/ N! ]' @4 J& f6 }& N" G, @: A ----Ref voltage
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