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ADM7172ACPZ-1.3-R7
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Product Detailed Parameters
- Description：IC REG LINEAR 1.3V 2A 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：2A
- Current - Quiescent (Iq)：2 mA
- Current - Supply (Max)：8.7 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 ADM7172ACPZ-1.3-R7 is a fixed-output, low dropout linear regulator (LDO) manufactured by Analog Devices Inc. It provides a regulated 1.3 V output with a maximum load current of 2 A. The device operates from an input voltage range of 2.3 V to 6.5 V and features ultralow noise performance of 5 µV rms in the 100 Hz to 100 kHz bandwidth. It achieves a power supply rejection ratio (PSRR) of 60 dB at 100 kHz and maintains high accuracy over line, load, and temperature variations within ±1.5%. The regulator includes precision enable control, adjustable soft start, and protection against overcurrent and thermal overload.
Feature Summary
- Ultralow noise output suitable for sensitive analog circuits
- High power supply rejection ratio across wide frequency ranges
- Fast transient response capability under heavy load steps
- Precision enable pin with programmable soft start functionality
Applications
- ADC and DAC circuit regulation
- Precision amplifier power supplies
- PLL/VCO and clocking IC regulation
- Medical and healthcare equipment
- Industrial instrumentation systems
Procurement Notes
Verify the specific part number suffix matches the required fixed output voltage configuration. Confirm package type and reel specifications align with manufacturing requirements. Ensure compatibility with recommended input and output capacitor values for stability. Check RoHS compliance status and moisture sensitivity level before assembly.
Selection Notes
Select this component when designing noise-sensitive mixed-signal systems requiring high current delivery. Consider the 1.3 V fixed output constraint versus adjustable alternatives if voltage flexibility is needed. Evaluate thermal dissipation requirements based on input-to-output voltage differential and load current. Verify PCB layout guidelines for optimal thermal performance and transient response.
Part Context
This LDO belongs to the ADM7172 family, designed for high-performance analog applications. It shares architectural similarities with the ADM7170 and ADM7171 but offers higher current capacity. The device utilizes advanced CMOS technology to achieve low quiescent current and excellent line/load regulation characteristics within a compact footprint.
Replacement Considerations
ADM7172ACPZ-1.8-R7: Fixed 1.8 V output variant
FAQ
What is the minimum recommended output capacitance for stability?
A minimum of 4.7 µF ceramic capacitor is recommended for stable operation.
How does the shutdown current compare to operating current?
Shutdown current is typically 0.25 µA at VIN = 5 V, significantly lower than the operating ground current.
