LM3670: Using 2 LM3670 to generate +- 2V

Tool/software:

Hi,

I require a DC/DC convertor that is able to produce an output voltage of +-2V. I would like to ask if its possible to use two LM3670s to interchangeably generate +2V or -2V, with one acting as the source while the other acting as the sink? If not, is there any other DC/DC converter that is able to achieve this? The other required specifications are as follows:

- Min supply voltage <= 3.3V
- Max supply voltage >= 4.2V
- Max output current >= 0.3A

Thanks in advance!