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CONTROL CIRCUIT OF SWITCHING REGULATOR, CONTROL CIRCUIT OF LINEAR REGULATOR, POWER SUPPLY DEVICE HAVING SWITCHING REGULATOR, AND POWER SUPPLY DEVICE HAVING LINEAR REGULATOR
CONTROL CIRCUIT OF SWITCHING REGULATOR, CONTROL CIRCUIT OF LINEAR REGULATOR, POWER SUPPLY DEVICE HAVING SWITCHING REGULATOR, AND POWER SUPPLY DEVICE HAVING LINEAR REGULATOR
PROBLEM TO BE SOLVED: To provide a switching regulator control circuit and a linear regulator control circuit for stabilizing the output voltage by suppressing ripple of the output voltage efficiently, and further to provide a power supply device having the switching regulator, and a power supply device having the linear regulator.;SOLUTION: The switching regulator control circuit 11 is connected with the input of a linear regulator 20 to output a first voltage VOUT1 to the regulator 20. The control circuit includes a first supply voltage selecting section 15 for selecting a voltage to be supplied to a first reference voltage generation circuit 12 for generating the reference voltage of a switching regulator 10 from the input voltage VIN and the first output voltage VOUT1 of the regulator 10 depending on the first output voltage VOUT1.;COPYRIGHT: (C)2009,JPO&INPIT
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