I need to bypass the 5 volt regulator on this... http://www.sparkfun.com/datasheets/Sensors/Proximity/SE-10.pdf
so it will run on 4 AA's. (4.8v). As you can see, the datasheet is useless unless I missed something. One commentor posted it pulls 1.6mA @ 3.3v, so using my SWAG method, I was going to limit the input current to 20 mA bypassing the regulator with a resistor from VCC to the output of the regulator, and popping off the input leg of the regulator. Any simple and better solutions?? Does the circuit even need a current limiting resistor because the datasheet for a standard 7805 says it will limit its output current to 1A ???
so it will run on 4 AA's. (4.8v). As you can see, the datasheet is useless unless I missed something. One commentor posted it pulls 1.6mA @ 3.3v, so using my SWAG method, I was going to limit the input current to 20 mA bypassing the regulator with a resistor from VCC to the output of the regulator, and popping off the input leg of the regulator. Any simple and better solutions?? Does the circuit even need a current limiting resistor because the datasheet for a standard 7805 says it will limit its output current to 1A ???