| 摘要 |
PROBLEM TO BE SOLVED: To provide a constant voltage control circuit for easily matching the start timing of a plurality of voltage regulators. SOLUTION: The constant voltage control circuit 100 comprises two voltage regulators 10 and 20 connected to an external DC power supply Vdd, and an internal reference power supply 2 common to the voltage regulators 10 and 20; and generates and outputs constant voltage signals controlled to a predetermined voltage value. The voltage regulators 10 and 20 each comprise a voltage controller 11, 21, and resistors R11 and R12, R21 and R22 as a voltage dividing circuit for dividing the output voltage. To an input terminal N2 of the voltage regulator 20, a voltage feedback signal VFB1 from the voltage dividing circuit of the other voltage regulator 10 is supplied as a voltage setting signal to the voltage controller 21, to thereby match the start timing of load circuits 200 and 300 connected to two output terminals. COPYRIGHT: (C)2005,JPO&NCIPI
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