How many sensors V3.3 of arduino mega 2560 pin can provide power to

Other Hardware Sensors
1

I have two temperature sensors of MLX90614 on 2.6 - 3.6 V and barometric pressure sensor of BMP180 on 1.8 - 3.6 V.

and I don't know if I can to connect all of them to the same the power pin in the Arduino Mega 2560 controller.

thanks for help.

2

You can pull 150mA from the 3.3V regulator. How much do the sensors need?
You may also need signal level translators for those, such as cd74HC4050 for 5V to 3.3V, and 74HC125 for 3.3V to 5V.