Hi,
according post#3:
I don´t think posting a schematic from a datasheet is useful for finding a circuit´s problem. (all we can do is to verify if the datasheet is correct, which in most cases is)
But usually the problem isn´t the datasheet schematic, but the real built circuit.
And if you want somebody to find an issue in your real circuit, then you need to give us this information.
And often the users say "I´ve built it exactly like in the datasheet" .... but the users miss to recognize that additional connections, missing capacitors, or simply a bad PCB layout may cause malfunction.
--> please give the informations (schematic, PCB layout, photo of wiring....) of your circuit.
Klaus