Power supply IC having switching regulator and series regulator

  • US 7,209,770 B2
  • Filed: 12/04/2003
  • Issued: 04/24/2007
  • Est. Priority Date: 12/13/2002
  • Status: Expired due to Fees
First Claim
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1. An integrated circuit for supplying power, comprising:

  • an IC chip having a rectangular shape and having a first edge and a second edge opposite the first edge;

    a switching regulator implemented on said IC chip and having a driver transistor whose ON time of switching is controlled to adjust an output voltage of said switching regulator; and

    a series regulator implemented on said IC chip, wherein said driver transistor of said switching regulator is positioned near the first edge and said series regulator is positioned near the second edge,wherein said series regulator and said driver transistor of said switching regulator are separated by a predetermined distance, andwherein said driver transistor of said switching regulator and said series regulator are positioned near opposite corners of said IC chip on a diagonal line of said IC chip.

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