Hi everyone! I have a breadboard ATmega328 with LEDs that uses 50 mA when awake, and 6.8 uA when sleeping. The chip is programmed to be awake for 2 minutes, and then sleep for 4 hours (240 min). I am planning on using a 7.4v lipo with it, and would like it to run as long as possible (until the battery cuts-off at ~5.8v).
Therefore, I was wondering:
How can I calculate what would the total battery draw be when the chip is awake using a voltage regulator such as one of the following? a. MCP1702 Linear regulator (http://ww1.microchip.com/downloads/en/DeviceDoc/22008E.pdf) b. Pololu D24V5F5 step-down switching regulator (http://www.pololu.com/product/2843)
How can I calculate what the battery draw would be for each regulator when the chip is sleeping?
Any thoughts & suggestions would be great... Thanks!