Packaging information
| Package | Pins SOIC (D) | 8 |
| Operating temperature range (°C) -40 to 125 |
| Package qty | Carrier 95 | TUBE |
Features for the LP2989
- 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
Description for the LP2989
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.