| Output options | Fixed Output |
| Iout (Max) (A) | 0.5 |
| Vin (Max) (V) | 16 |
| Vin (Min) (V) | 2.1 |
| Vout (Max) (V) | 5 |
| Vout (Min) (V) | 2.5 |
| Fixed output options (V) | 2.5, 2.8, 3, 3.3, 3.8, 5 |
| Noise (uVrms) | 18 |
| Iq (Typ) (mA) | 0.11 |
| Thermal resistance θJA (°C/W) | 35 |
| Rating | Catalog |
| Load capacitance (Min) (μF) | 4.7 |
| Regulated outputs (#) | 1 |
| Features | Enable, Power good |
| Accuracy (%) | 2 |
| PSRR @ 100 KHz (dB) | 32 |
| Dropout voltage (Vdo) (Typ) (mV) | 310 |
| Operating temperature range (C) | -40 to 125 |
- 2.1-V to 16-V Input Voltage Range
- 2.5-V to 5-V Fixed Output Voltage Options
- Ultra-Low Dropout Voltage
- 500-mA Continuous Output Current
- Very Low Output Noise With External Capacitor
- < 0.8-μA Quiescent Current When Shutdown
- Low Ground Pin Current at All Loads
- 0.75% Output Voltage Accuracy (A Grade)
- High Peak Current Capability (800-mA typical)
- Overtemperature and Overcurrent Protection
- ?40°C to 125°C Junction Temperature Range
The LP2989 is a fixed-output 500-mA precision LDO regulator designed for use with ceramic output capacitors.
Output noise can be reduced to 18 μV (typical) by connecting an external 10-nF capacitor to the bypass pin.
Using an optimized Vertically Integrated PNP (VIP) process, the LP2989 delivers superior performance:
- Dropout Voltage: Typically 310 mV at 500-mA load, and 1 mV at 100-μA load.
- Ground Pin Current: Typically 3 mA at 500-mA load, and 110 μA at 100-μA load.
- Sleep Mode: The LP2989 draws less than 0.8-μA quiescent current when SHUTDOWN pin is pulled low.
- Error Flag: The built-in error flag goes low when the output drops approximately 5% below nominal.
- Precision Output: Output voltage accuracy is 0.75% (A grade) and 1.25% (standard grade) at room temperature.
For output voltages < 2 V, see LP2989LV (SNVS086) data sheet.