A question regarding the LT8603. The datasheet states that the output voltages will stay constant during a cold crank. But while I was simulating the demo circuit, I got the simulation below. While Vin went from 5V to 3V all the output voltages collapsed. Why is that?


Find the datasheet and demo circuit over here: https://www.analog.com/en/products/lt8603.html#product-reference