| Pin |
Symbol |
Description |
| 1 | ADJ | This pin lets you adjust the level at which the cycle skipping takes place. shorting this pin to ground, permanently disables the skip cycle feature. |
| 2 | FB | Skip cycle occurs when FB falls below Vpin1. |
| 3 | CS | This pin senses the primary current. |
| 4 | GND | The IC ground pin. |
| 5 | DRV | The drivers output to an external MOSFET. |
| 6 | VCC | This pin is connected to external bulk capacitor of typically 22uf. |
| 7 | NC | Not connected. |
| 8 | HV | Connected to the HIGH voltage rail, this pin injects a constant current into the VCC capacitor during the startup sequence. |
