Hello Mr. Steve,

The datasheet contains manufacturer's test results and I have seen that they measured the ratings at I (out)=5ma and 50 ma, so I don't think that the load is too small.

The real problem is with Capacitor ESR, on page 6 of datasheet, there is a graph between load current and capacitor ESR.

From this graph, the ESR should be ~5 at I=150 ma (and of course, it should be 5 or less at the desired temperature).

Let Vaclav experiment and tell us the results.

Regards

IA