具有使能功能的 250mA、16V、低压降稳压器
| Output options | Fixed Output |
| Iout (Max) (A) | 0.25 |
| Vin (Max) (V) | 16 |
| Vin (Min) (V) | 2.2 |
| Vout (Max) (V) | 5 |
| Vout (Min) (V) | 1.5 |
| Fixed output options (V) | 1.5, 1.8, 2.5, 3.3, 5 |
| Noise (uVrms) | 30 |
| Iq (Typ) (mA) | 0.065 |
| Thermal resistance θJA (°C/W) | 72 |
| Rating | Catalog |
| Load capacitance (Min) (μF) | 4.7 |
| Regulated outputs (#) | 1 |
| Features | Enable, Soft start |
| Accuracy (%) | 2 |
| PSRR @ 100 KHz (dB) | 40 |
| Dropout voltage (Vdo) (Typ) (mV) | 450 |
| Operating temperature range (C) | -40 to 125 |
- Input Voltage Range: 2.2 V to 16 V
- Output Voltage Range: 1.5 V to 5 V
- Wide Supply Voltage Range (16-V Maximum)
- Output Voltage Accuracy 1% (A Grade)
- Ultra-Low-Dropout Voltage
- Specified 250-mA Output Current
- Stable With Low-ESR Output Capacitor
- < 1-μA Quiescent Current When Shut Down
- Low Ground Pin Current at All Loads
- High Peak Current Capability
- Low ZOUT: 0.3-? Typical (10 Hz to 1 MHz)
- Overtemperature and Overcurrent Protection
- ?40°C to +125°C Junction Temperature Range
- Smallest Possible Size (SOT-23, WSON Package)
- Requires Minimum External Components
- Custom Voltages Available
The LP2992 is a 250-mA, fixed-output voltage regulator designed to provide ultra-low dropout and low noise in battery-powered applications.
Using an optimized vertically integrated PNP (VIP) process, the LP2992 delivers unequaled performance in all specifications critical to battery-powered designs:
- Dropout voltage: Typically 450 mV at 250-mA load, and 5 mV at 1-mA load.
- Ground pin current: Typically 1500 μA at 250-mA load, and 75 μA at 1-mA load.
- Enhanced stability: The LP2992 is stable with output capacitor equivalent series resistance (ESR) as low as 5 m?, which allows the use of ceramic capacitors on the output.
- Sleep mode: Less than 1-μA quiescent current when ON/OFF pin is pulled low.
- Smallest possible size: SOT-23 and WSON packages use absolute minimum board space.
- Precision output: 1% tolerance output voltages available (A grade).
- Low noise: By adding a 10-nF bypass capacitor, output noise can be reduced to 30 μV (typical).
- Multiple voltage options, from 1.5 V to 5 V, are available as standard products. Consult factory for custom voltages.
