LDO and load switch output capacitor

nPM1300 and nPM1304 Hardware Design Guidelines

In Low-Dropout Regulator (LDO) mode, use two 10 µF nominal capacitors in parallel on each of the outputs from the LSOUT1/VOUTLDO1 and LSOUT2/VOUTLDO2 pins. The effective total output capacitance for each pin must be a minimum of 6 µF for stability and operation.

In Load switch mode, one 1 µF nominal capacitor can be used on each of the outputs from the LSOUT1/VOUTLDO1 and LSOUT2/VOUTLDO2 pins.

If the capacitance is too high, it increases the inrush current and can cause droop in the rail supplying the LDO and load switch.

The voltage rating of the capacitors should be higher than the maximum output voltage of the LDO and load switch. A minimum voltage rating of 6.3 V is recommended.