LP38511

LP38511 www.ti.com SNOSAU6E – NOVEMBER 2007 – REVISED APRIL 2013 LP38511-1.8 800 mA Fast-Transient Response Low-Dropout Linear Voltage Regulator with Error Flag Check for Samples: LP38511 FEATURES 1 2 2.25V to 5.5V Input Voltage Range 1.8V Fixed Output Voltage 800 mA Output Load Current +/- 2.5% VOUT Accuracy over Line, Load, and Full-Temperature Range from -40°C to +125°C Stable with tiny 10 µF Ceramic Capacitors 0.20% Output Voltage Load Regulation from 10 mA to 800 mA Enable pin Error Flag Indicates Status of Output Voltage 1 µA of Quiescent Current in Shutdown 40dB of PSRR at 100 kHz Over-Temperature and Over-Current Protection DDPAK/TO-263 and PFM Surface Mount Packages DESCRIPTION The LP38511-1.8 Fast-Transient Response LowDropout Voltage Regulator offers the highestperformance in meeting AC and DC accuracy requirements for powering Digital Cores. The LP38511-1.8 uses a proprietary control loop that enables extremely fast response to change in line conditions and load demands. Output Voltage DC accuracy is specified at ±2.5% over line, load and full temperature range from -40°C to +125°C. The LP38511-1.8 is designed for inputs from the 2.5V, 3.3V, and 5.0V rail, is stable with 10uF ceramic capacitors, and has a fixed 1.8V output. An Error Flag feature monitors the output voltage and notifies the system processor when the output voltage falls more than 15% below the nominal value. The LP38511-1.8 provides excellent transient performance to mee...