Power supply apparatus and method for portable terminal equipment

The invention that to at least calls only are possible by having blocking power supply to the PDA module when there is insufficient remaining battery level in particular, the mobile terminal relates to a power supply apparatus and method for a portable terminal and supplying power only to call module The purpose. The present invention for this purpose is the from the charging circuit 110, the power supply being charged by the PDA module 150 and communications module 160 for charging the battery 120, the charging battery 120 for supplying power to the When senses the charge level of the PDA module 150, the relay switch 140 and the charging battery 120 for for cutting off the power supply to the determined below a predetermined level by switching the relay switch 140, the PDA module the configuration provided with a level sensor 130 to shut off power to the unit 150.