Datasheet4U Logo Datasheet4U.com

LP3991 - 300-mA LDO

General Description

Operating from a minimum input voltage of 1.65 V, the LP3991 LDO has been designed to provide fixed stable output voltages for load currents up to 300 mA.

Key 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.

📥 Download Datasheet

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
Product Folder Sample & Buy Technical Documents Tools & Software Support & Community 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 Description Operating from a minimum input voltage of 1.