The LP2950 and LP2951 devices are bipolar, low-dropout voltage regulators that can accommodate a wide input supply-voltage range of up to 30 V. The easy-to-use, 3-pin LP2950 is available in fixed-output voltages of 5 V, 3.3 V, and 3 V. However, the 8-pin LP2951 is able to output either a fixed or adjustable output from the same device. By tying the OUTPUT and SENSE pins together, and the FEEDBACK and VTAP pins together, the LP2951 outputs a fixed 5 V, 3.3 V, or 3 V (depending on the version). Alternatively, by leaving the SENSE and VTAP pins open and connecting FEEDBACK to an external resistor divider, the output can be set to any value between 1.235 V to 30 V.
| Iout (Max) (A) |
| Output Options |
| Vin (Min) (V) |
| Vin (Max) (V) |
| Fixed Output Options (V) |
| Vout (Min) (V) |
| Vout (Max) (V) |
| Iq (Typ) (mA) |
| Vdo (Typ) (mV) |
| Accuracy (%) |
| Noise (uVrms) |
| PSRR @ 100KHz (dB) |
| Output Capacitor Type |
| Rating |
| Operating Temperature Range (C) |
| Pin/Package |
| LP2951 | LP2950 | LP2950-N | LP2951-N |
|---|---|---|---|
| 0.1 | 0.1 | 0.1 | 0.1 |
|
Adjustable Output Fixed Output |
Fixed Output | Fixed Output |
Adjustable Output Fixed Output |
| 2 | 2 | 2.3 | 2.3 |
| 30 | 30 | 30 | 30 |
|
3 3.3 5 |
3 3.3 5 |
3 3.3 5 |
3 3.3 5 |
| 1.2 | 3 | 3 | 1.24 |
| 29 | 5 | 5 | 29 |
| 0.075 | 0.075 | 0.075 | 0.075 |
| 380 | 110 | 380 | 380 |
| 3 | 3 | 3 | 2.5 |
| 160 | 100 | 100 | 160 |
| 57 | 57 | 51 | 51 |
| Non-Ceramic | Ceramic | Ceramic | Ceramic |
| Catalog | Catalog | Catalog | Catalog |
| -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 |
|
8SOIC 8SON |
3TO-92 |
3TO-252 3TO-92 |
8PDIP 8SOIC 8VSSOP 8WSON |
| Order Now | Order Now | Order Now | Order Now |
| Version | Part Number | Definition |
|---|---|---|
| Automotive | LP2951-Q1 | Q100 devices qualified for high-reliability automotive applications targeting zero defects |
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