ADM7155ARDZ-03-R7

The ADM7155 is an adjustable linear regulator that operates from 2.3 V to 5.5 V and provides up to 600 mA of load current. Output voltages from 1.2 V to 3.4 V are possible depending on the model. Using an advanced proprietary architecture, it provides high power supply rejection and ultralow noise, achieving excellent line and load transient response with only a 10 μF ceramic output capacitor. The ADM7155 regulator typical output noise is 0.9 μV rms from 100 Hz to 100 kHz for fixed output voltage options and 1.5 nV/√Hz for noise spectral density from 10 kHz to 1 MHz. The ADM7155 is available in 8 - lead, 3 mm×3 mm LFCSP and 8 - lead SOIC packages, making it not only a very compact solution but also providing excellent thermal performance for applications requiring up to 600 mA of load current in a small, low profile footprint.

Applications

• Regulation to noise sensitive applications: PLLs, VCOs, and PLLs with integrated VCOs
• Communications and infrastructure
• Backhaul and microwave links

Key features

• Input voltage range: 2.3 V to 5.5 V
• Output voltage range: 1.2 V to 3.4 V
• Maximum load current: 600 mA
• Low noise 0.9 μV rms total integrated noise from 100 Hz to 100 kHz; 1.6 μV rms total integrated noise from 10 Hz to 100 kHz
• Noise spectral density: 1.5 nV/√Hz from 10 kHz to 1 MHz
• PSRR: > 90 dB from 200 Hz to 200 kHz; 57 dB at 1 MHz
• Dropout voltage: 120 mV typical at VOUT = 3.3 V, IOUT = 600 mA
• Initial accuracy: ±0.5%
• Accuracy over line, load, and temperature: -2.0% (minimum), +1.5% (maximum)
• Quiescent current, IGND = 4 mA at no load
• Low shutdown current: 0.2 μA
• Stable with a 10 μF ceramic output capacitor
• 8 - lead LFCSP and 8 - lead SOIC packages
• Precision enable
• Supported by ADIsimPower tool