LP38798SD-ADJ/NOPB Power Regulator IC LDO Voltage Regulators 800mA Ultra-Lo Noise Hi PSRR LDO

LP38798SD-ADJ/NOPB Power Regulator IC LDO Voltage Regulators 800mA Ultra-Lo Noise Hi PSRR LDO

1 Features

• Wide Operating Input Voltage Range: 3 V to 20 V

• Ultra-Low Output Noise: 5 μVRMS (10 Hz to 100 kHz)

• HighPSRR:90dBat10kHz,60dBat100kHz

• ±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 Instrumentation

• Precision Power Supplies

• High-Speed, High-Precision Data Converters

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 with both ceramic and tantalum output capacitors and requires a minimum output capacitance of only 1 μF for stability.

The LP38798-ADJ can operate over a wide input voltage range (3 V to 20 V) making it well suited for many post-regulation applications.

Device Information