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LM3670: LM3670MF-3.3/NOPB : workaround or device alternatives with better Vout stability at low load?

Part Number: LM3670
Other Parts Discussed in Thread: LM3674, LM3671, TPS62200, TPS62240, TPS62203, TPS62260, TINA-TI


The LM3670MF-3.3/NOPB shows a Vout 3.3V fluctuation of +/-20mV at Vin: 5V, Iout=70mA.
However for this application it is required to have a much lower fluctuation (0.1% of Vout).

We are looking at the different options like:
-Is it possible to disable PFM for LM3670?
-Do we have a comparable LM36xx device without PFM? Would LM3671/LM3674 show a better stability on Vout?
-If not do we have a SOT-23 equivalent that would show a better stability in the output?

-If there are not P-2-P alternative what else can we propose? Iout max: 200mA, I typ: 90mA

Thanks in advance,