| Manufacturer | Part # | Datasheet | Description |
 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 |
| LM26400YMH |  2Mb/24P | Dual 2A, 500kHz Wide Input Range Buck Regulator |
 National Semiconductor ... | LM26400YMHX |  2Mb/24P | Dual 2A, 500kHz Wide Input Range Buck Regulator |
 National Semiconductor ... | LM26400YSD |  2Mb/24P | Dual 2A, 500kHz Wide Input Range Buck Regulator |
 National Semiconductor ... | LM26400YSDE |  2Mb/24P | Dual 2A, 500kHz Wide Input Range Buck Regulator |
 National Semiconductor ... | LM26400YSDX |  2Mb/24P | Dual 2A, 500kHz Wide Input Range Buck Regulator |
| LM26400Y_0708 |  2Mb/24P | Dual 2A, 500kHz Wide Input Range Buck Regulator |
 National Semiconductor ... | LM2640MTC-ADJ |  504Kb/18P | Dual Adjustable Step-Down Switching Power Supply Controller |