The LP2950 and LP2951 are micropower voltage regulators that are specifically designed to maintain proper regulation with an extremely low input–to–output voltage differential. These devices feature a very low quiescent bias current of 75 µA and are capable of supplying output currents in excess of 100 mA. Internal current and thermal limiting protection is provided. The LP2951 has three additional features. The first is the Error Output that can be used to signal external circuitry of an out of regulation condition, or as a microprocessor power–on reset. The second feature allows the output voltage to be preset to 5.0 V, 3.3 V or 3.0 V output (depending on the version) or programmed from 1.25 V to 29 V. It consists of a pinned out resistor divider along with direct access to the Error Amplifier feedback input. The third feature is a Shutdown function that can be used to disable the device.
The Motorola LP2950 and LP2951 are micropower voltage regulators designed to maintain proper regulation with an extremely low input-to-output voltage differential. These devices feature a very low quiescent bias current of 75 pA and are capable of supplying output currents in excess of 100 mA. Internal current and thermal limiting protection is provided for reliable operation.
| Output Current | 100 mA |
|---|---|
| Output Voltage (5.0 V Versions) | 4.950 V to 5.050 V |
| Output Voltage (3.3 V Versions) | 3.267 V to 3.333 V |
| Output Voltage (3.0 V Versions) | 2.970 V to 3.030 V |
| Line Regulation | 0.08% |
| Load Regulation | 0.13% |
| Dropout Voltage (100 pA) | 30 mV |
| Dropout Voltage (100 mA) | 350 mV |
| Current Limit | 220 mA |
The LP2950 is available in fixed voltage versions of 3.0 V, 3.3 V, or 5.0 V, or it can be programmed from 1.25 V to 29 V.
The LP2950 and LP2951 are capable of supplying output currents in excess of 100 mA.