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Reference Design
LP3991
SNVS296J – DECEMBER 2006 – REVISED JUNE 2016
LP3991 300-mA LDO for Digital Applications
1 Features
•1 Input Voltage From 1.
65 V to 4 V • Output Voltage From 0.
8 V to 3 V • 1% Accuracy at Room Temperature • 125-mV Dropout at 300-mA Load • 50-µA Quiescent Current at 1-mA Load • Inrush Current Controlled to 600 mA • PSRR 65 dB at 1 kHz • 100-µs Start-Up Time for 1.
5-V VOUT • Stable With Ceramic Capacitors as Small as 0402 • Thermal-Overload and Short-Circuit Protection
2 Applications
• Post DC-DC
Regulator • Battery Operated Devices • Hand-Held Information Appliances
3 Descriptio...