LP38798 - Texas Instruments

LP38798 800-mA Ultra-Low-Noise High-PSRR LDO

The LP38798-ADJ is a high-performance, low-noise LDO that can supply up to 800 mA output current. Designed to meet the requirements of sensitive RF/Analog circuitry, the LP38798-ADJ implements a novel linear topology on an advanced CMOS process to deliver ultra-low output noise and high PSRR at switching power supply frequencies. The LP38798SD-ADJ is stable .

Features

•1 Wide Operating Input Voltage Range: 3 V to 20 V
• Ultra-Low Output Noise: 5 µVRMS (10 Hz to 100 kHz)
• High PSRR: 90 dB at 10 kHz, 60 dB at 100 kHz
• ±1% Output Voltage Initial Accuracy (TJ = 25°C)
• Very Low Dropout: 200 mV (Typical) at 800 mA
• Stable with Ceramic or Tantalum Output Capacitors
• Excellent Line and Load Transient Response
• Current Limit and Overtemperature Protection
• Create a Custom Design Using the LP38798 With the WEBENCH® Power Designer 2 Applications
• RF Power Supplies: PLLs, VCOs, Mixers, LNAs
• Telecom Infrastructure
• Wireless Infrastructure
• Very Low-Noise Ins.