sheng
Junior Member level 1
Hi,
My design circuit have a 6V (4AA) battery input and uses a LDO 3.3v. My circuit function up to 3.1V of the 6V battery. Instead of wasting the rest of the battery life, I have a low voltage detector in the circuit, once the battery reaches 3.1v, I want to switch to used the charge pump IC. My question is how do I design the circuit once it reaches 3.1v to use the charge pump Ic to run the circuit? The voltage detector is active low once the main battery is 3.1v. I am thinking of using transistor but don't know the right combo to make the switching. Thanks.
My design circuit have a 6V (4AA) battery input and uses a LDO 3.3v. My circuit function up to 3.1V of the 6V battery. Instead of wasting the rest of the battery life, I have a low voltage detector in the circuit, once the battery reaches 3.1v, I want to switch to used the charge pump IC. My question is how do I design the circuit once it reaches 3.1v to use the charge pump Ic to run the circuit? The voltage detector is active low once the main battery is 3.1v. I am thinking of using transistor but don't know the right combo to make the switching. Thanks.