ADM7172ACPZ-2.5-R7

Overview

The ADM7172ACPZ-2.5-R7 is a fixed-output low dropout linear regulator manufactured by Analog Devices Inc., providing a regulated 2.5 V output with a maximum load current of 2 A. It operates within an input voltage range of 2.3 V to 6.5 V and features ultralow noise performance, delivering 5 µV rms in the 100 Hz to 100 kHz bandwidth. The device achieves high power supply rejection ratio (PSRR) of 60 dB at 100 kHz and fast transient response, settling within 1.5 μs for a 1 mA to 1.5 A load step. Initial accuracy is specified between −0.5% and +1%, expanding to ±1.5% over line, load, and temperature conditions. Quiescent current is 0.7 mA at no load, dropping to 0.25 μA during shutdown.

Feature Summary

• Ultralow noise architecture delivers consistent 5 µV rms output noise across all fixed voltage options.
• High power supply rejection ratio maintains 60 dB attenuation at 100 kHz under heavy loading.
• Fast transient response capability settles output deviations within 1.5 μs during rapid load steps.
• Precision enable pin provides defined logic thresholds for reliable system control and shutdown.

Applications

• Regulation for analog-to-digital and digital-to-analog converter circuits
• Powering precision amplifiers and phase-locked loops
• Supply conditioning for clocking integrated circuits

Procurement Notes

Verify component authenticity through official manufacturer channels or authorized distributors. Confirm package integrity and marking alignment with the 8-lead LFCSP specification. Ensure environmental compliance documentation matches project requirements before integration into production lines.

Selection Notes

Select this regulator when applications require stable 2.5 V rails with minimal noise interference. Verify that input voltage remains above 2.3 V and thermal dissipation fits within the 8-lead LFCSP package limits. Ensure output capacitance meets minimum stability requirements for optimal transient performance.

Part Context

This component belongs to the ADM7172 series of CMOS low dropout regulators designed for high-performance analog and mixed-signal applications. The family offers various fixed and adjustable output voltages ranging from 1.2 V to 5.0 V, sharing common architectural features such as ultralow noise and high PSRR capabilities.

Replacement Considerations

ADM7172ACPZ-1.8-R7: Fixed 1.8 V output variant with identical package and electrical characteristics. ADM7172ACPZ-3.3-R7: Fixed 3.3 V output variant maintaining the same 2 A current rating and package footprint.