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ADM7171ACPZ-2.5-R7
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Product Detailed Parameters
- Description：IC REG LINEAR 2.5V 1A 8-LFCSP-WD
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：6.5V
- Voltage - Output (Min/Fixed)：2.5V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：-
- Current - Output：1A
- Current - Quiescent (Iq)：2 mA
- Current - Supply (Max)：6.3 mA
- PSRR：-
- Control Features：Enable, Soft Start
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：8-WFDFN Exposed Pad, CSP
- Supplier Device Package：8-LFCSP-WD (3x3)
- Grade：-
- Qualification：-
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Overview
The ADM7171ACPZ-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 1 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 500 mA load step. It includes precision enable control, adjustable soft start, and thermal overload protection.
Feature Summary
- Ultralow noise architecture ensures stable operation for sensitive analog circuits
- High power supply rejection ratio maintains regulation under varying input conditions
- Fast transient response capability handles rapid load changes effectively
- Precision enable pin allows precise control over startup and shutdown states
Applications
- Regulation for ADC and DAC circuits
- Powering precision amplifiers
- Supplying PLLs/VCOs and clocking ICs
- Communications and infrastructure systems
Procurement Notes
Verify the specific ordering suffix matches the required package and tape/reel configuration. Confirm that the fixed 2.5 V output aligns with system requirements, as other voltages are available in the series. Ensure compatibility with the 8-lead LFCSP footprint during PCB layout planning.
Selection Notes
Select this component when low noise and high PSRR are critical for signal integrity. Verify that the input voltage remains above the minimum threshold while accounting for dropout voltage at peak load currents. Consider the thermal resistance characteristics if operating near maximum load limits.
Part Context
This part belongs to the ADM7171 family of CMOS LDO regulators designed for high-performance mixed-signal applications. The series offers various fixed output options ranging from 1.2 V to 5.0 V, alongside an adjustable version. It shares common architectural features including PMOS pass transistors and advanced proprietary circuitry for low noise and fast transient response.
Replacement Considerations
The ADM7170 serves as a lower current alternative within the same family, offering 500 mA output capability. The ADM7172 provides higher current capacity at 2 A. Both share similar input voltage ranges and packaging options.
