Hi Ti engineer,
When using TPS76301DBVT, it is found that the low temperature output ripple becomes larger. When the ceramic capacitor is replaced by tantalum capacitor, the ripple returns to normal. May I ask what should be paid attention to when using this LDO? Why is the output noise of the low-temperature LDO so bad.
circuit design
DVDD normal temperature ripple
DVDD low temperature (-30℃) ripple: