| Pin Number | Function | ||
| Single Output | Dual Output | Triple Output | |
| 1 | Positive Input | Positive Input | Positive Input |
| 2 | Input Return | Input Return | Input Return |
| 3 | Case* | Case* | Case* |
| 4 | Enable 1 | Enable 1 | Enable 1 |
| 5 | Sync Output | Sync Output | Sync Output |
| 6 | Sync Input | Sync Input | Sync Input |
| 7 | Positive Output | Positive Output | Main Output |
| 8 | Output Return | Output Return | Output Return |
| 9 | Return Sense | Negative Output | Neg. Aux. Output |
| 10 | + Sense | Trim | + Sense |
| 11 | Share | Share | Pos. Aux. Output |
| 12 | Enable 2 | Enable 2 | Enable 2 |
| * "Stability" pin for the MQFL-28V and MQFL-28VE converters. | |||