| Manufacturer | Part # | Datasheet | Description |
 National Semiconductor ... | LM21305 |  1Mb/24P | 5A Adjustable Frequency Synchronous Buck Regulator |
| LM21305 |  3Mb/12P | Evaluation Board full featured adjustable frequency synchronous |
| LM21305SQ |  1Mb/24P | 5A Adjustable Frequency Synchronous Buck Regulator |
 National Semiconductor ... | LM21305SQE |  1Mb/24P | 5A Adjustable Frequency Synchronous Buck Regulator |
 National Semiconductor ... | LM21305SQX |  1Mb/24P | 5A Adjustable Frequency Synchronous Buck Regulator |
 National Semiconductor ... | LM21305 |  1Mb/24P | 5A Adjustable Frequency Synchronous Buck Regulator |