LTC6226 DC Package Exposed Pad to connect to GND

Hello,

Power supply pins are connected to +5V for V+ and -5V for V- respectively in my application. Is it OK to connect the exposed pad of DC package to GND? Currently in my circuit board, E-pad is connected to -5V. The temperature on the package of LTC6226 is higher than I expected and I am considering if connecting E-pad to GND will dissipate the heat better.

Best Regards,
Katsuhiro