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
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.
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檢視所有 3 | 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | LP2989 Micropower and Low-Noise, 500-mA Ultra Low-Dropout Regulator for Use With Ceramic Output Capacitors datasheet (Rev. O) | PDF | HTML | 2015年 3月 10日 |
| Selection guide | Power Management Guide 2018 (Rev. R) | 2018年 6月 25日 | ||
| Selection guide | Low Dropout Regulators Quick Reference Guide (Rev. P) | 2018年 3月 21日 |
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