CIRCUIT FOR VOLTAGE OUTPUT, ELECTRONIC APPARATUS, MOVING BODY, METHOD OF MANUFACTURING CIRCUIT FOR VOLTAGE OUTPUT, AND METHOD OF MANUFACTURING ELECTRONIC APPARATUS

• Main Author: KIYA HIROSHI
• Format: Patent
• Language: English; Japanese
• Published: 05.02.2015
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

PROBLEM TO BE SOLVED: To provide a circuit for voltage output that allows preventing consumption of unnecessary power of a second power supply even when the second power supply is connected prior to a first power supply, an electronic apparatus, a moving body, a method of manufacturing the circuit for voltage output, and a method of manufacturing the electronic apparatus.SOLUTION: A circuit 1 for voltage output includes: a first power-supply terminal VDD; a second power-supply terminal VBAT; an output terminal VOUT; a switch circuit 33 located on a supply path of a voltage from the second power-supply terminal VBAT to the output terminal VOUT, and cutting off the supply of the voltage from the second power-supply terminal VBAT to the output terminal VOUT at the time of open state; a switch control circuit 10 fixing the switch circuit 33 to the open state on the basis of the voltage of the second power-supply terminal VBAT; and a switch control circuit 20 releasing the fixation of the open state of the switch circuit 33 on the basis of the voltage of the first power-supply terminal VDD. 【課題】第１電源よりも先に第２電源が接続されても第２電源の不要な電力の消耗を抑えることが可能な電圧出力用回路、電子機器、移動体、電圧出力用回路の製造方法及び電子機器の製造方法を提供すること。【解決手段】電圧出力用回路１は、第１電源端子ＶＤＤと、第２電源端子ＶＢＡＴと、出力端子ＶＯＵＴと、第２電源端子ＶＢＡＴから出力端子ＶＯＵＴへの電圧の供給路にあり、開状態の時に第２電源端子ＶＢＡＴから出力端子ＶＯＵＴへの電圧の供給を遮断するスイッチ回路３３と、第２電源端子ＶＢＡＴの電圧に基づき、スイッチ回路３３を開状態に固定するスイッチ制御回路１０と、第１電源端子ＶＤＤの電圧に基づき、スイッチ回路３３の開状態の固定を解除するスイッチ制御回路２０と、を備えている。【選択図】図１