RAA214023GNP#HC0

The RAA214023 is an ultra low-noise, high-PSRR, low-dropout voltage regulator. The LDO operates from an input voltage range of 2.7V to 5.5V and can source a maximum 2A load. The output voltage can be programmed from 0.8V to 3.95V by means of the PCB layout, eliminating the need for traditional external feedback resistors. To extend the output voltage range up to 5.5V-V DROPOUT external feedback resistors can still be used. The RAA214023 has a low output noise of 6.5μv RMS typical and high PSRR, making it well suited for post-regulation in low-noise applications. The operating quiescent current is typically 195μA and drops to a couple nanoamps typical when in shutdown making it great for portable applications. The LDO features ±1.75% output voltage accuracy (over line, load, and temperature), input UVLO with hysteresis, enable control, internal current limit, thermal shutdown protection with hysteresis, power-good indication, and fast start-up. The device is stable with a minimum 22μF ceramic output capacitor and is available in a 20 Ld 3.5mm×3.5mm or 5mm×5mm QFN package.

Applications

• High Speed Analog: VCO, ADC, DAC, LVDS
• Clock and Timing
• RF and Wireless
• IoT and Smart Utilities
• 4G and 5G Telecom

Key features

• Input Voltage Range: 2.7V to 5.5V
• Max Output Current: 2A
• Max dropout voltage: 567mV at 2A and 3.3 VOUT
• Low RMS output noise: 6.5μV_RMS (10Hz to 100kHz)
• Two Output Voltage Configurations:
• Using PCB layout and voltage set pins: 0.8V to 3.95V
• External Resistors: 0.8V to 5.5V-VDROPOUT
• Output Noise Spectral Density:
• 226nV/√Hz at 10Hz
• 77nV/√Hz at 10kHz
• High PSRR V_HEADROOM = 1.7V:
• 100kHz: 60dB at 2A and 85dB at 500mA
• 1MHz: 51dB at 2A and 62dB at 500mA
• Output Voltage Accuracy ±1.75% over line, load, and temperature
• Fast startup: 200μs at V_HEADROOM = 3.7V
• Typical shutdown current: 200nA at +125°C
• Overvoltage indication, and overcurrent and over-temperature fault protection