I've bought new S7v8A step-up/step-down voltage regulator which should give me on output 2.7-8V. However, when using multimeter I am adjusting correct value let say to around 5V (it really doesn't matter it happens all the time) and then connect it to my board (Teensy 3.1) it immediately drops the voltage to 0.84V.
What can cause this error and is there a way to fix it?
EDIT1: According to documentation the microcontroller max current value is 185 mA. I didn't find any information about minimum load. The regulator has 4 pins connected as shown below:
According to the info from the website:
The SHDN pin can be driven low (under 0.4 V) to power down the regulator and put it in a low-power state. The quiescent current in this sleep mode is dominated by the current in the 100k pull-up resistor from SHDN to VIN. With SHDN held low, this resistor will draw 10 µA per volt on VIN (for example, the sleep current with a 5 V input will be 50 µA). The SHDN pin can be driven high (above 1.2 V) to enable the board, or it can be connected to VIN or left disconnected if you want to leave the board permanently enabled.
The SHDN pin can be left not connected and it should still work correctly.
So as you can see it is quite strange behavior (at least I guess so).