According to Page 7, Table 8 in the datasheet for MC34063, the startup voltage is 2.1V typical for A series and 1.5V typical for E series.
It is also said in Note 4 that the start-up voltage is the minimum power supply voltage at which the internal oscillator begins to work.
I am trying to implement a 2-cell Ni-MH battery to 5V,100mA step up converter, where the input voltage varies from 1.8V to 3V. I know that there are more suitable ICs like this one, but I want to learn how to make MC34063 work in low voltages if it is possible.
How can I make MC34063 work as a step-up converter with 2.1V input?