JAJSNX2 January 2024 TPSM843820E
PRODUCTION DATA
During start-up, the device softly ramps the reference voltage to reduce inrush currents. There are four options for the soft-start time, which is the time the reference takes to ramp to 0.5V: 0.5ms, 1ms, 2ms, and4 ms. The soft-start time is selected with a resistor to AGND on the MODE pin (see Section 6.3.8).
The device prevents current from being discharged from the output during start-up when a prebiased output condition exists. The device does this by operating in discontinuous conduction mode (DCM) during the first 16 cycles to prevent the device from sinking current. This action makes sure the output voltage is smooth and monotonic during soft start.