Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Shogo Hachiya0
Date of Patent
May 25, 2010
0Patent Application Number
116599400
Date Filed
August 4, 2005
0Patent Primary Examiner
Patent abstract
A power supply apparatus includes a switching regulator, a linear regulator, a timer circuit, a control circuit, an inverter, and a switch. The power supply apparatus is a step-down type DC-DC converter which steps down an input voltage inputted to an input terminal and then outputs an output voltage, which has been stepped down, to an output terminal. The timer circuit counts the time elapsed from when a start of the power supply apparatus is instructed by a control signal, and sets an output signal to a high level at a lapse of a predetermined time. When the output signal goes to the high level, the switch turns on and the output voltage is supplied to a power supply terminal of the control circuit.
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