Overcoming a boost converters soft start function
Costs a GPIO pin, but simple.







simulate this circuit &ndash; Schematic created using CircuitLab

Make sure the MOSFET you choose is rated for the 2.5A continuous,has a logic level gate and a low Rds on. Pull the gate low after Vout stabilizes. If that part had a power good output, you could even tie the power good signal to the gate.