The LP5951 regulator is designed to meet the requirements of portable battery-powered systems providing a regulated output voltage and low quiescent current. When switched to shutdown mode via a logic signal at the Enable (EN) pin, the power consumption is reduced to virtually zero.
The LP5951 is designed to be stable with small 1-µF ceramic capacitors. The device also features internal protection against short-circuit currents and over-temperature conditions.
Performance is specified for a –40°C to 125°C temperature range.
The device is available in fixed output voltages in the range of 1.3 V to 3.7 V. For availability, please contact your local TI sales office.
| Output options | Fixed Output |
| Iout (max) (A) | 0.15 |
| Vin (max) (V) | 5.5 |
| Vin (min) (V) | 1.8 |
| Vout (max) (V) | 3.7 |
| Vout (min) (V) | 1.3 |
| Fixed output options (V) | 1.3, 1.5, 1.8, 2, 2.5, 2.8, 3, 3.3, 3.7 |
| Noise (µVrms) | 125 |
| Iq (typ) (mA) | 0.029 |
| Thermal resistance θJA (°C/W) | 196 |
| Rating | Catalog |
| Load capacitance (min) (µF) | 1 |
| Regulated outputs (#) | 1 |
| Features | Enable |
| Accuracy (%) | 3 |
| PSRR at 100 KHz (dB) | 32 |
| Dropout voltage (Vdo) (typ) (mV) | 200 |
| Operating temperature range (°C) | -40 to 125 |
| SOT-23 (DBV) | 5 | 8.12 mm² 2.9 x 2.8 |
| SOT-SC70 (DCK) | 5 | 4.2 mm² 2 x 2.1 |
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