Hi all,

Currently im using LT3471 to configure a dual rail supply of +/-40V from a 3.3V supply.
The datasheet says that the IC can produce such voltages.

Does anyone have schematics or maybe be of any help please?

Thanks!

 

The application note gives a circuit and details how to scale resistor values to achieve the desired output voltage.

 

you want to put 3.3V in and get 40V out?!

 

As Kermit2, stated, read the data sheet. It has all the info you need to use the chip.
Layout is also critical, so note the layout suggestions.

How much current do you need at ±40V and how much current is available from the 3.3V supply?

Edit: Understand that the 3.3V current will be over 40/3.3 = 12.1 times the current of each output (the values add from each output, so if both outputs have the same current it would be over 24.2 times the output current).

The free simulation program, LTspice from Linear Technology, includes the LT3471 model.
If you right click on its schematic symbol and select the Macromodel's test fixture, a test schematic will appear with the components to generate ±7V outputs to help you get started with the device and understand how it works..