Am using the tps61175 boost converter ic in a project. per the datasheet here
i noticed when i pull the EN(enable) PIN LOW and the boost converter ic turns OFF , i still read voltage at the output Vout and the voltage corresponds to my input voltage Vin.
To further elaborate, say i connect a 3v battery to Vin and pull the EN(enable) PIN HIGH for the boost converter ic to start working with a Vout of 5.1v. When i pull the EN(enable) pin low, the Vout is becomes 3v.
The first picture shows what i did to turn the circuit off completely. That approach also lead to loss of about 400mA and the output voltage broke down to 4V instead of the desired 5V.
I need help about how to make the output Vout 0v when the boost ic is OFF, thus turn the circuit of completely.