Your schematic seems to be copied OK from the datasheet's Typical Application Schematic.
Did you follow the PCB Layout Guide as recommended in the datasheet? These regulators can be picky on the PCB layout.
Did you check/measure the actual component values on your PCB?
Did you use the recommended coils/diode?
Did you check with an oscilloscope on the different signals?
Is something running hot?
Hi, i built another board and now the voltage is stable but not quite at 5V. Its a little lower like 4.9V. Is it a problem for teensy, servoes and other boards(the say that the VIN should be 5V but pls tell me that 4.9 is good, i don't want to make another board)