@gazzaman2k as @GeorgeBoudreau mentioned he is using the AZ432 chip which is the same design as the v4.21 boards on the LEAF version.
AZ432ANTR-E1 = VOLTAGE REFERENCES 1.25V 18V ±0.5% 20PPM/°C SOT-23(SOT-23-3) ROHS
This part is currently out of stock on JLCPCB, a similar part is this.
TL432G-A-AE3-R = VOLTAGE REFERENCES 1.25V 15V 50PPM/°C SOT-23(SOT-23-3) ROHS
It should be a drop in replacement. There are other components that would work, but these are much more expensive.