LDO voltage lower than expected
Page 23 of the datasheet at http://www.ti.com/lit/ds/symlink/tlv755p.pdf lists orderable device (part number) and device marking... Since ti.com offers a 0.9V version of the part, check the marking on the top of the device to verify it is a TLV75533 ("AN" or "1FWF" or "1H3H") and not a TLV75509 ("AX" or "1HDH").