| 制造商 | 部件名 | 数据表 | 功能描述 |
 National Semiconductor ... | LM3503SQX-44 |  1Mb/20P | Dual-Display Constant Current LED Driver with Analog Brightness Control |
| LM3503SQX-44 |  1Mb/20P | Dual-Display Constant Current LED Driver with Analog Brightness Control |
 National Semiconductor ... | LM3503SQ-35 |  1Mb/ 20P | Dual-Display Constant Current LED Driver with Analog Brightness Control |
| LM3503SQ-35 |  1Mb/ 20P | Dual-Display Constant Current LED Driver with Analog Brightness Control |
 National Semiconductor ... | LM3503SQ-44 |  1Mb/ 20P | Dual-Display Constant Current LED Driver with Analog Brightness Control |
| LM3503SQ-44 |  1Mb/ 20P | Dual-Display Constant Current LED Driver with Analog Brightness Control |
 National Semiconductor ... | LM3503ITL-16 |  1Mb/ 20P | Dual-Display Constant Current LED Driver with Analog Brightness Control |
| LM3503ITL-16 |  1Mb/ 20P | Dual-Display Constant Current LED Driver with Analog Brightness Control |
| LM3503ITL-25 |  1Mb/ 20P | Dual-Display Constant Current LED Driver with Analog Brightness Control |
| LM3503ITL-25 |  1Mb/ 20P | Dual-Display Constant Current LED Driver with Analog Brightness Control |
 National Semiconductor ... | LM3503ITL-35 |  1Mb/ 20P | Dual-Display Constant Current LED Driver with Analog Brightness Control |
| LM3503ITL-35 |  1Mb/ 20P | Dual-Display Constant Current LED Driver with Analog Brightness Control |
 National Semiconductor ... | LM3503ITL-44 |  1Mb/ 20P | Dual-Display Constant Current LED Driver with Analog Brightness Control |
| LM3503ITL-44 |  1Mb/ 20P | Dual-Display Constant Current LED Driver with Analog Brightness Control |