具有低噪聲和使能功能的 50mA、16V、低壓降穩壓器
| Output options | Fixed Output |
| Iout (Max) (A) | 0.05 |
| Vin (Max) (V) | 16 |
| Vin (Min) (V) | 3.12 |
| Vout (Max) (V) | 5 |
| Vout (Min) (V) | 3 |
| Fixed output options (V) | 3, 3.3, 5 |
| Noise (uVrms) | 30 |
| Iq (Typ) (mA) | 0.065 |
| Thermal resistance θJA (°C/W) | 176 |
| Rating | Catalog |
| Load capacitance (Min) (μF) | 2.2 |
| Regulated outputs (#) | 1 |
| Features | Enable |
| Accuracy (%) | 2.3 |
| PSRR @ 100 KHz (dB) | 38 |
| Dropout voltage (Vdo) (Typ) (mV) | 120 |
| Operating temperature range (C) | -40 to 125 |
- 2.1-V to 16-V Input Voltage
- Ultra-Low-Dropout Voltage
- Ensured 50-mA Output Current
- Typical Dropout Voltage 180 mV at 80 mA
- Requires Minimum External Components
- < 1 μA Quiescent Current When Shut Down
- Low Ground Pin Current at All Loads
- Output Voltage Accuracy 1% (A Grade)
- High Peak Current Capability (150 mA Typical)
- Wide Supply Voltage Range (16 V Maximum)
- Low ZOUT 0.3 Ω Typical (10 Hz to 1 MHz)
- Overtemperature and Overcurrent Protection
- ?40°C to +125°C Junction Temperature Range
The LP2982 is a 50-mA, fixed-output voltage LDO designed to provide ultra-low dropout and lower noise in battery-powered applications.
Using an optimized vertically integrated PNP (VIP) process, the LP2982 delivers unequaled performance in all specifications critical to battery-powered designs:
Dropout Voltage: Typically 120 mV at 50 mA load, and 7mV at 1 mA load.
Ground Pin Current: Typically 375 μA at 50 mA load, and 80 μA at 1 mA load.
Sleep Mode: Less than 1-μA quiescent current when ON/OFF pin is pulled low.
Precision Output: 1% tolerance output voltages available (A grade).
Low Noise: By adding an external bypass capacitor, output noise can be reduced to 30 μV (typical).
For all available packages, see the orderable addendum at the end of the data sheet.
