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
- 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
- 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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