Introduction: In high-end analog circuits, RF systems, and precision measurement instruments, power supply noise is often a critical bottleneck that limits system performance. As a high-performance power management product from ADI (Analog Devices), the ADM7172ACPZ-5.0 offers a 2A output current, ultra-low noise of 5μVrms, and a high PSRR of 60dB@100kHz, making it an ideal power solution for noise-sensitive applications. As a seasoned electronic component distributor in Shenzhen, Mingjiada Electronics offers brand-new, genuine stock to help ensure a clean power supply for your products.
Product Overview: High-Performance CMOS LDO Regulator
The ADM7172 series is a CMOS low-dropout linear regulator introduced by ADI, featuring an advanced proprietary architecture. The ADM7172ACPZ-5.0 is the fixed 5V output voltage version of this series, capable of delivering up to 2A of output current with an input voltage range of 2.3V to 6.5V. It is well-suited for the voltage regulation needs of high-performance analog and mixed-signal circuits with supply rails ranging from 6V to 1.2V.
Housed in a compact 8-pin LFCSP package (3mm × 3mm), this device not only enables a miniaturized solution but also offers excellent thermal performance, making it particularly suitable for applications requiring high output current in space-constrained environments.
ADM7172ACPZ-5.0 Key Specifications
Manufacturer: Analog Devices Inc.
Output Type: Fixed
Output Voltage: 5V
Output Current: 2A
Input Voltage Range: 2.3V to 6.5V
Dropout Voltage (Typical): 172mV @ 2A load (when VOUT = 3V)
Noise: 5μVrms (100Hz ~ 100kHz)
PSRR (Power Supply Rejection Ratio): 60dB @ 100kHz
Quiescent Current (Iq): 0.7mA (no load)
Shutdown Current: 0.25μA (VIN=5V)
Initial Accuracy: -0.5% / +1%
Full-range accuracy: ±1.5% (across linearity, load, and temperature ranges)
Operating temperature range: -40°C to +125°C
Package type: 8-pin LFCSP-WD (3mm × 3mm)
Packaging: Reel, standard packaging 1,500 per reel
Key Features and Technical Advantages
1. Ultra-low noise—5 μVrms
The ADM7172ACPZ-5.0 features an output noise of only 5 μVrms (over the 100 Hz to 100 kHz range), and this noise level is independent of the output voltage. This characteristic makes it an ideal choice for noise-sensitive applications, such as ADC/DAC reference voltage sources, PLL/VCO power supplies, and precision amplifier power supplies, effectively reducing system noise introduced by the power supply.
2. Fast Transient Response — 1.5 μs
Under load step conditions ranging from 1 mA to 1.5 A, the ADM7172 typically achieves a transient response time of 1.5 μs. Additionally, excellent linearity and load transient response can be achieved using a small 4.7 μF ceramic output capacitor, saving PCB space while ensuring dynamic performance.
3. High Power Supply Rejection Ratio (PSRR) — 60dB @ 100kHz
At a frequency of 100kHz, the ADM7172 maintains a PSRR of 60dB, effectively suppressing high-frequency ripple interference from the input power supply or upstream DC-DC converters, thereby providing a clean power rail for downstream circuits.
4. Comprehensive Features
Precision Enable: Facilitates power sequencing control
Adjustable Soft Start: Allows the startup time to be set via an external capacitor, suppressing inrush current during power-up. With a 1nF soft-start capacitor, the typical startup time is 1.0 ms.
Comprehensive Protection Features: Includes overcurrent protection (OCP) and over-temperature protection (OTP) to ensure safe operation under abnormal conditions.
Typical Applications
With its high-current, low-noise, and high-PSRR characteristics, the ADM7172ACPZ-5.0 is widely used in the following fields:
Communications and Infrastructure: Clock and PLL power supplies in base stations, optical modules, and network equipment
Healthcare: Medical imaging equipment, portable patient monitors, and precision analytical instruments
Industrial and Instrumentation: Data acquisition cards, automated test equipment (ATE), and precision measuring instruments
Noise-sensitive applications: ADC/DAC reference power supplies, precision amplifier power supplies, and RF transceiver power supplies
Power Management: Core or analog power supplies for high-performance FPGAs, DSPs, and MCUs
Package and Ordering Information
The ADM7172ACPZ-5.0 is available in an 8-pin LFCSP-WD package (3mm × 3mm) with an exposed pad on the bottom to enhance thermal performance.
Full Part Number: ADM7172ACPZ-5.0-R7 (Suffix -R7 indicates tape-and-reel packaging, 1,500 pieces per reel)
MSL Rating: 3 (168 hours)
RoHS Compliance: Compliant with RoHS 3.0
Mingjiada Electronics — Shenzhen Stock Availability
About Us
Established in 1996, Shenzhen Mingjiada Electronics Co., Ltd. is an international professional distributor with nearly three decades of experience in the electronic component distribution sector. With warehouses and service offices in Hong Kong, Shenzhen, Guangzhou, and other locations, the company has earned the long-term trust and support of numerous customers through its high-quality service, global supply capabilities, and highly competitive pricing.
Contact Us
Contact Person: Mr. Chen
Phone: +86 13410018555
Email: sales@hkmjd.com
Website: www.integrated-ic.com
We welcome your inquiries!
Your message must be between 20-3,000 characters!
English
