I'm going through around 30 different parts from TI's site looking at them and I came across this one just now:
Unfortunately they don't provide a convenient schematic with a 5V output and listing the input range, nor do they seem to have any tables showing what output voltage you can get with a particular input, but strangely they do have a graph on page 10, figure 10, which appears to show a 5V output with a 4.5V input.