Calculating Power consumption of RTC

Thread Starter

Siva_sbj

Joined Oct 18, 2007
1
HI I am designing a battery backup circuit for PCF8583 RTC. The datasheet gives the following info

supply current
(clock mode)
VDD = 5 V 10uA(Typical) 50 uA(max)
VDD = 1 V 2uA(Typical) 10 uA(max)

Typical condition Temp = 25 deg C

I am operating the RTC from 3 V battery.

How could I calculate the power consumption? Is there any formula or method to calculate the power consumption?


Thanks in advance.
 

bloguetronica

Joined Apr 27, 2007
1,372
HI I am designing a battery backup circuit for PCF8583 RTC. The datasheet gives the following info

supply current
(clock mode)
VDD = 5 V 10uA(Typical) 50 uA(max)
VDD = 1 V 2uA(Typical) 10 uA(max)

Typical condition Temp = 25 deg C

I am operating the RTC from 3 V battery.

How could I calculate the power consumption? Is there any formula or method to calculate the power consumption?


Thanks in advance.
You should consider the data for 5V, for safety. Then, the power consumption would be:
P = V x I, being V = 3V and I the current for 5V

Hope it helps!
 
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