LP2989ILDX-3.3/NOPB

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.

Applications

• Notebooks and Desktop PCs
• PDAs and Palmtop Computers
• Wireless Communication Pins
• SMPS Post-Regulators

Key features

• 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