| Manufacturer | Part # | Datasheet | Description |
 National Semiconductor ... | LM2720 |  149Kb/8P | 5-Bit Programmable, High Frequency Multi-phase PWM Controller |
| LM2720 |  348Kb/10P | 5-Bit Programmable, High Frequency Multi-phase PWM Controller |
| LM2720M |  149Kb/8P | 5-Bit Programmable, High Frequency Multi-phase PWM Controller |
| LM2720M |  348Kb/10P | 5-Bit Programmable, High Frequency Multi-phase PWM Controller |
| LM2720 |  348Kb/10P | 5-Bit Programmable, High Frequency Multi-phase PWM Controller |
| LM27212 |  1Mb/23P | Two-Phase Current-Mode Hysteretic Buck Controller |
| LM27212MTD |  1Mb/23P | Two-Phase Current-Mode Hysteretic Buck Controller |
| LM27212MTDX |  1Mb/23P | Two-Phase Current-Mode Hysteretic Buck Controller |
| LM27212SQ |  1Mb/23P | Two-Phase Current-Mode Hysteretic Buck Controller |
| LM27212SQX |  1Mb/23P | Two-Phase Current-Mode Hysteretic Buck Controller |
| LM27213 |  958Kb/22P | Single Phase Hysteretic Buck Controller |
 National Semiconductor ... | LM27213MTD |  958Kb/22P | Single Phase Hysteretic Buck Controller |
 National Semiconductor ... | LM27213MTDX |  958Kb/22P | Single Phase Hysteretic Buck Controller |