Hello,
I have taken three samples of TPS70915DBVR LDO regulator but when I placed it on my PCB doesn't work. I have 12V input and I don't have output 1,5V. Also, I design a PCB to test the regulator but the same thing. In the attachment you can the schematic and the PCB layout.
TPS70915:
http://www.ti.com/product/tps70915