ADM7172ACPZ-5.0 2A Low Dropout Linear Regulator with High PSRR and 5V Fixed Output LDO Voltage Regulator

ADM7172ACPZ-5.0 is a CMOS, low dropout linear regulator (LDO) that operates from 2.3 V to 6.5 V and provides up to 2 A of output current. This high output current LDO is ideal for regulation of high performance analog and mixed-signal circuits operating from 6 V down to 1.2 V rails. Using an advanced proprietary architecture, ADM7172ACPZ-5.0 provides high power supply rejection and low noise, and achieves excellent line and load transient response with just a small 4.7 µF ceramic output capacitor. Load transient response is typically 1.5 μs for a 1 mA to 1.5 A load step.

• Input voltage range: 2.3 V to 6.5 V
• Maximum load current: 2 A
• Low noise: 5 µV rms independent of output voltage at 100 Hz to 100 kHz
• Fast transient response: 1.5 μs for 1 mA to 1.5 A load step
• 60 dB PSRR at 100 kHz
• Low dropout voltage: 172 mV at 2 A load, VOUT = 3 V
• Initial accuracy: −0.5% (minimum), +1% (maximum)
• Accuracy over line, load, and temperature: ±1.5%
• Quiescent current, IGND = 0.7 mA with no load
• Low shutdown current: 0.25 μA at VIN = 5 V
• Stable with small 4.7 µF ceramic output capacitor
• Adjustable and fixed output voltage options: 1.2 V to 5.0 V
• Adjustable output from 1.2 V to VIN − VDO
• Precision enable
• Adjustable soft start
• 8-lead 3 mm × 3 mm LFCSP package

• Regulation to noise sensitive applications: ADC and DAC circuits, precision amplifiers, PLLs/VCOs, and clocking ICs
• Communications and infrastructure
• Medical and healthcare
• Industrial and instrumentation