i am using lpc2378 arm processor. In lpc2378 Vbat pin I am connected 3.3V supply through bat60 and 3V lithium battery connected through IN4007. RTC working fine, in power down (OFF) mode VBat pin consuming 13 to 14mA and RTC updating fine. But battery will down with in half hour. In my application per day minimum 1 to 2 hour power cut will happen. Pl gives the suggestion what type of battery need to connect?
Thanks ravikiran