Question: I'm a co-op student working on a hardware design for an industry client, and I'm trying to use a [TPS63000](http://www.ti.com/lit/ds/symlink/tps63000-q1.pdf) to get a Vout of 3.45V. Vin is 5V. When I power this circuit up, I read 5V on Vin but only 0.7V from Vout. [![TPS63000 Application Circuit](https://i.stack.imgur.com/vQ9VR.png)](https://i.stack.imgur.com/vQ9VR.png)

Here's the PCB design:
[![PCB design](https://i.stack.imgur.com/gjGLL.png)](https://i.stack.imgur.com/gjGLL.png)

I'm not sure what approach to take in troubleshooting this. Any help would be appreciated.

EDIT: Unfortunately I don't have easy access to an oscilloscope, but when I do, I will definitely try to confirm that there's a pulse across the inductor.
Yesterday I assembled another PCB, and I'm getting a very similar result. Vout actually stabilizes at 322mV, and does so with a high degree to accuracy. During startup, I do see Vout shift drastically, but always settles around 322mV. Sorry that that's not very much to go on, an oscilloscope will definitely help give a better picture. 

So it seems to me possible causes are: A. lack of R3/C3 on the Vin pin, B. narrow traces on the PCB, or C. bad chip. Thanks for all the responses so far.

Answer: 
You have no delay on the VINA, EN and PS/SYNC pins. It is unclear what mode the thing will go into when connected like that.

The [device specs](http://www.ti.com/lit/ds/symlink/tps63000.pdf) shows a suitable delay circuit.
[![enter image description here](https://i.stack.imgur.com/u3P2M.png)](https://i.stack.imgur.com/u3P2M.png)
A few guesses/pointers: -

* Try fitting link W1
* Check R1 isn't 1.8 kohm (or a wrong value)
* Is exposed thermal pad properly earthed?
* Have you got too much output load?
* Check that oscillations are running about 1350 kHz
* Is your meter working correctly?

Good luck.