| Manufacturer | Part # | Datasheet | Description |
 National Semiconductor ... | LP2989AIMM-2.5 |  616Kb/19P | Micropower/Low Noise, 500 mA Ultra Low-Dropout Regulator For Use with Ceramic Output Capacitors |
 National Semiconductor ... | LP2989AIMM-2.8 |  616Kb/19P | Micropower/Low Noise, 500 mA Ultra Low-Dropout Regulator For Use with Ceramic Output Capacitors |
| LP2989AIMM-1.8 |  685Kb/11P | Micropower 500 mA Low Noise Low Dropout Regulator for Applications with Output Voltages < 2V Designed for Use with Very Low ESR Output Capacitors |
| LP2989AIMM-3.0 |  616Kb/19P | Micropower/Low Noise, 500 mA Ultra Low-Dropout Regulator For Use with Ceramic Output Capacitors |
 National Semiconductor ... | LP2989AIMM-3.3 |  616Kb/19P | Micropower/Low Noise, 500 mA Ultra Low-Dropout Regulator For Use with Ceramic Output Capacitors |
 National Semiconductor ... | LP2989AIMM-5.0 |  616Kb/19P | Micropower/Low Noise, 500 mA Ultra Low-Dropout Regulator For Use with Ceramic Output Capacitors |
 National Semiconductor ... | LP2989AIMMX-1.8 |  685Kb/11P | Micropower 500 mA Low Noise Low Dropout Regulator for Applications with Output Voltages < 2V Designed for Use with Very Low ESR Output Capacitors |
| LP2989AIMMX-2.5 |  616Kb/19P | Micropower/Low Noise, 500 mA Ultra Low-Dropout Regulator For Use with Ceramic Output Capacitors |
 National Semiconductor ... | LP2989AIMMX-2.8 |  616Kb/19P | Micropower/Low Noise, 500 mA Ultra Low-Dropout Regulator For Use with Ceramic Output Capacitors |
| LP2989AIMMX-3.0 |  616Kb/19P | Micropower/Low Noise, 500 mA Ultra Low-Dropout Regulator For Use with Ceramic Output Capacitors |
| LP2989AIMMX-3.3 |  616Kb/19P | Micropower/Low Noise, 500 mA Ultra Low-Dropout Regulator For Use with Ceramic Output Capacitors |
 National Semiconductor ... | LP2989AIMMX-5.0 |  616Kb/19P | Micropower/Low Noise, 500 mA Ultra Low-Dropout Regulator For Use with Ceramic Output Capacitors |