LM2991 系列
| 製造商零件# | 描述 | 製造商 | 有存貨 | 手術 |
| LM2991S | IC REG LIN NEG ADJ 1A DDPAK | Texas Instruments | 5555 |
|
| LM2991SX/NOPB | IC REG LIN NEG ADJ 1A DDPAK | National Semiconductor | 2339 |
|
| LM2991SX | IC REG LINEAR NEG ADJ 1A DDPAK | National Semiconductor | 4339 |
|
| LM2991T/NOPB | IC REG LIN NEG ADJ 1A TO220-5 | National Semiconductor | 6992 |
|
| LM2991T/LB03 | LM2991 NEGATIVE LOW DROPOUT ADJU | National Semiconductor | 5087 |
|