Good Morning. Here the IC datasheet:
https://www.google.com.cu/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&ved=0ahUKEwiA9PaLytrZAhVjmeAKHbG-DB0QFggtMAE&url=http%3A%2F%2Ffiles.remontc%%%drec-%.net 2Fdata% 2FAT1796.pdf & usg = AOvVaw32fDmzf5UHPMGJ6Ie74RoA
Between the GND pin and the others, with the multimeter to measure diode and the positive on that pin, you must mark as a diode with the other pins
Greetings and comments.