SN6507 Q1 start up sequence waveforms are shown in the following figure.
Channel 1: Start-up with input
voltage of 15V at full load of 100mA, [scale: 5V/div, 10ms/div] Channel 3: Output voltage at start-up with 15
VOUT at full load of 100mA, [scale: 5V/div, 10ms/div]