| Manufacturer | Part # | Datasheet | Description |
 National Semiconductor ... | LM2647MTC |  763Kb/25P | Dual Synchronous Buck Regulator Controller |
 National Semiconductor ... | LM2647MTCX |  763Kb/25P | Dual Synchronous Buck Regulator Controller |
 National Semiconductor ... | LM2647MTCX |  763Kb/25P | Dual Synchronous Buck Regulator Controller |
 National Semiconductor ... | LM2647LQ |  763Kb/25P | Dual Synchronous Buck Regulator Controller |
 National Semiconductor ... | LM2647LQX |  763Kb/25P | Dual Synchronous Buck Regulator Controller |
 National Semiconductor ... | LM2640 |  504Kb/18P | Dual Adjustable Step-Down Switching Power Supply Controller |
 National Semiconductor ... | LM26400Y |  2Mb/24P | Dual 2A, 500kHz Wide Input Range Buck Regulator |
 National Semiconductor ... | LM26400YMH |  2Mb/24P | Dual 2A, 500kHz Wide Input Range Buck Regulator |
 National Semiconductor ... | LM26400YMHX |  2Mb/24P | Dual 2A, 500kHz Wide Input Range Buck Regulator |