I using LTspice to simulate a boost circuit to bring a 3.7 volts lipo battery up to 5 volts in order to power raspberry pi zero. When I simulate the circuit it works just fine (shown in the first picture) however when I add a load resistor representing the raspberry pi zero the voltage drops back down to 3.7 volts. (shown in the second picture). I have been trying to troubleshoot this circuit problem. Maybe there is a glaring mistake that someone sees that I don’t.

This is the datasheet for the MC34063 IC chip: https://www.ti.com/lit/ds/symlink/mc34063a.pdf

The math for the load resistor:

V = IR

~0.2 volts = (~0.1 amps) R

~2 ohm = R

I got ~0.1 amp from this site: https://www.cnx-software.com/2021/12/09/raspberry-pi-zero-2-w-power-consumption/

I got ~0.365 volts from measuring (the voltage without the load at ~3.94 volts and the voltage with the load at ~3.74 volts) and then took the difference of ~0.2

Please tell me what you think I would greatly appreciate feedback! Thank you!