POWER CONTROL DEVICE AND A POWER CONTROL METHOD FOR MAXIMIZING A LIFETIME OF A BATTERY

摘要

PURPOSE: A power control device and a power control method are provided to minimize power consumption by using an LDO(Low Drop Out) regulator with low costs.;CONSTITUTION: A current sensing unit(120) senses a current inputted to a regulator(110). A plurality of resistors(130) are connected to an output terminal of the regulator. A switch unit(140) is connected to the plurality of resistors. A control unit(150) compares the sensed current value with a reference current value. If the sensed current value is larger than the reference current value, the control unit controls the switch unit to increase an output voltage of the regulator. If the sensed current value is smaller than the reference current value, the control unit controls the switch unit to decrease the output voltage of the regulator.;COPYRIGHT KIPO 2013;[Reference numerals] (110) Regulator; (141) First switch; (142) Second switch; (150) Control unit