| Pin |
Symbol |
Description |
| 1 | OSC | An Rt/Ct network must be connected to that pin to define the switching frequency |
| 2 | VDD | It corresponds to the low voltage supply of the control part of the circuit |
| 3 | SOURCE | Power MOSFET source pin. Primary side circuit common ground connection |
| 4 | COMP | When the COMP voltage is going below 0.5V the shutdown of circuit occurs, with a zero duty cycle of the power MOSFET |
| 5 | DRAIN | Internal power MOSFET drain pin. It provides internal bias current during start-up |
| 6 | DRAIN | SAME AS PIN NO. 5 |
| 7 | DRAIN | SAME AS PIN NO. 5 |
| 8 | DRAIN | SAME AS PIN NO. 5 |
