i designed the circuit seen below and have been following all datasheet recomandations. The purpose of the circuit is to switch on a load connected to the 3.3V output of the TPS63001. When the button2 is press-held once for approximately 2 seconds, the tps63001 starts up. To maintain the state a microcontroller is used to pull the enable pin high even if the button is released. This is working so far.
Unfortunately, i observe some really strange behavior. When the circuit is shut down it randomly enables itself vor a few seconds and shuts down again. I even tested the circuit with only a 10 Ohm resistor connected to the 3.3V output and without the microcontroller. Still the same behavior. Input battery voltage ranges between 2.8 and 4.2 Volts. Current consumtion is bettween 200 and 400 mA. Coil is 2.2uH
I would really appreciate any help, since i am really desperate. I tried with two different chips and both show the same behavior.