ADP7157ACPZ-04-R7

The ADP7157 is an adjustable linear regulator that operates from 2.3 V to 5.5 V and provides up to 1.2 A of output current. Output voltages from 1.2 V to 3.3 V are possible depending on the model. Using an advanced proprietary architecture, the device provides high power supply rejection and ultralow noise, achieving excellent line and load transient response with only a 10 μF ceramic output capacitor. The typical output noise the ADP7157 regulator is 0.9 μV rms from 100 Hz to 100 kHz and 1.7 nV/√Hz for noise spectral density from 10 kHz to 1 MHz. The ADP7157 is available in 10 - 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 1.2 A of output current in a small, low profile footprint.

Applications

• Regulation to noise sensitive applications: phase - locked loops (PLLs), voltage controlled oscillators (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
• Adjustable output voltage range (VOUT): 1.2 V to 3.3 V
• Maximum load current: 1.2 A
• Low noise 0.9 μV rms typical output noise from 100 Hz to 100 kHz, 1.6 μV rms typical output noise from 70 Hz to 100 kHz
• Noise spectral density: 1.7 nV/√Hz from 10 kHz to 1 MHz
• Power supply rejection ratio (PSRR): 82 dB from 1 kHz to 100 kHz, 55 dB at 1 MHz
• Dropout voltage: 120 mV typical at IOUR = 1.2 A, V0UT = 3.3 V
• Initial accuracy: ±0.6% at ILOAD = 10 mA
• Accuracy over line, load, and temperature: ±1.5%
• Operating supply current (IGND): 4.0 mA typical at 0 μA, 7.0 mA typical at 1.2 A
• Low shutdown current: 0.2 μA typical
• Stable with a 10 μF ceramic output capacitor
• 10 - lead, 3 mm×3 mm LFCSP and 8 - lead SOIC packages
• Precision enable
• Supported by ADIsimPower tool