ELECTRONIC DEVICE AND METHOD FOR CONTROLLING CHARGING CURRENT

The present invention provides an electronic device comprising a battery terminal ( 240 ) for coupling the electronic device ( 100 ) to a battery ( 280 ), a battery temperature terminal ( 242 ) for providing a battery temperature signal indicative of a temperature of the battery, a switch ( 210 ) selectively providing bi-directional coupling of a charging input ( 275 ) to the battery terminal ( 240 ), a power supply feed line ((B+)) coupling the charging input to at least one module ( 103, 102 ) of the electronic device ( 100 ), a diode ( 212, 220 ) providing continuous one way coupling from the battery terminal ( 240 ) to the power supply feed line ((B+)), a battery charging detector ( 235 ) having charging detect output ( 237 ), and a controller ( 230 ) having a control output ( 233 ) coupled to a control switch input ( 216 ) of the switch ( 210 ) and inputs coupled to both the battery temperature terminal ( 242 ) and the charging detect output ( 237 ), wherein in use the controller ( 230 ) open circuits the switch ( 210 ) in response to both receiving a charging signal from the battery charging detector indicating that the battery is being charged and receiving the battery temperature signal indicating that the battery temperature has exceeded a first predetermined threshold value.