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Dear TI forum,
For my design, a 5V output is required and the minimum output capacitance that I need (to comply with output voltage ripple and overshoot requirements) is very small (around 1uF). However, the output capacitor selection section from the LMZM23600 datasheet (9.2.2.3) states that a certain minimum output capacitance is required to ensure a stable operation. Then, the following table is presented (sorry for the resolution but couldn't manage to upload a proper one):
Based on this table, the following questions came to my mind:
1) The recommended output capacitances seem to be standard values for MLCC capacitors. However, it clearly says in the table "recommended output capacitance". Is this capacitance or the ceramic capacitor rated value? Because in this last case, the DC bias should be considered.
2) Why is "the stable operation ensured" with the minimum output capacitance suggested in the table? Is the internal control loop adversely affected by the output capacitance when it's too small? Or it's just some random values selected to guarantee a certain output voltage ripple?
Thank you in advance for your feedback and don't hesitate contacting me back if something is not clearly explained.
Best regards,
Juan
