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ADM7171ACPZ-1.3-R7
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Product Detailed Parameters
- Description：IC REG LINEAR 1.3V 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)：1.3V
- 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-1.3-R7 is a CMOS low dropout linear regulator manufactured by Analog Devices Inc., operating within an input voltage range of 2.3 V to 6.5 V and delivering up to 1 A of load current. It provides a fixed output voltage of 1.3 V with an initial accuracy of −0.5% to +1%. The device features ultralow noise of 5 μV rms (100 Hz to 100 kHz) and high power supply rejection ratio of 60 dB at 100 kHz. Quiescent current is typically 0.7 mA, dropping to 0.25 μA in shutdown mode. It includes precision enable, adjustable soft start, and thermal overload protection, housed in an 8-lead, 3 mm × 3 mm LFCSP package.
Feature Summary
- Ultralow output noise independent of the output voltage setting
- High power supply rejection ratio across wide frequency ranges
- Fast transient response utilizing small ceramic output capacitors
- Precision enable pin with programmable soft-start functionality
Applications
- Regulation for noise-sensitive analog-to-digital converter circuits
- Powering precision amplifiers and mixed-signal integrated circuits
- Voltage regulation for phase-locked loops and voltage-controlled oscillators
- Clocking integrated circuits requiring stable low-noise rails
Procurement Notes
Verify the specific ordering suffix matches the required fixed output voltage configuration. Confirm the package type corresponds to the 8-lead LFCSP variant. Ensure compatibility with the intended input voltage range and load current requirements before finalizing procurement specifications.
Selection Notes
Select this component for applications demanding minimal output noise and rapid transient recovery under heavy load variations. The fixed 1.3 V output eliminates external feedback resistor networks, simplifying board layout. Verify that the minimum input voltage maintains sufficient headroom above the dropout threshold during maximum load conditions.
Part Context
This part belongs to the ADM7171 family of high-performance CMOS LDO regulators designed for portable and battery-powered equipment. The series offers various fixed voltage options alongside an adjustable version, all sharing the same compact footprint and robust protection features including current limiting and thermal shutdown.
Replacement Considerations
The ADM7170 serves as a lower-current alternative within the same family, providing 500 mA output capability. Designers should verify that the reduced current rating meets application demands when considering cross-model substitution.
