Overview
The ADM7172ACPZ-1.8-R7 is a CMOS, low dropout linear regulator (LDO) produced by Analog Devices Inc. This device operates from an input voltage range of 2.3 V to 6.5 V and provides up to 2 A of output current, making it ideal for high-performance analog and mixed-signal circuits. The ADM7172 features an advanced proprietary architecture that ensures high power supply rejection and low noise, along with excellent line and load transient response. It is particularly suited for applications requiring low quiescent current and high output current in a compact footprint.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Voltage Range | VIN | 2.3 | 6.5 | V | |
| Load Current | ILOAD | 2 | A | ||
| Operating Supply Current (No Load) | IGND | 0.7 | 2.0 | mA | |
| Operating Supply Current (Full Load) | IGND | 4.8 | 8.7 | mA | |
| Shutdown Current | IGND-SD | 0.25 | 3.8 | μA | |
| Output Voltage Accuracy (Fixed Output) | VOUT | -0.5% | +1% | % | |
| Output Voltage Accuracy (Over Line, Load, and Temperature) | VOUT | -1.5% | +1.5% | % | |
| Output Noise | 5 | μV rms | |||
| Low Dropout Voltage | 172 | mV at 2 A load | |||
| Package Type | 8-lead, 3 mm × 3 mm LFCSP |
Key Features
- High power supply rejection and low noise (5 μV rms output noise)
- Low dropout voltage: 172 mV at 2 A load
- High accuracy: ±1.5% over line, load, and temperature
- Low quiescent current: 0.7 mA (typical) at no load, 4.8 mA (typical) at full load
- Low shutdown current: 0.25 μA (typical)
- Adjustable and fixed output voltage options: 1.2 V to 5.0 V
- Precision enable and adjustable soft start
- Thermal overload protection and current limiting
- Compact 8-lead, 3 mm × 3 mm LFCSP package
Applications
The ADM7172ACPZ-1.8-R7 is suitable for various high-performance applications, including:
- Noise-sensitive analog and mixed-signal circuits such as analog-to-digital converters (ADCs), digital-to-analog converters (DACs), precision amplifiers, phase-locked loops (PLLs), and voltage-controlled oscillators (VCOs)
- Communications and infrastructure equipment
- Medical and healthcare devices
- Industrial and instrumentation systems
Q & A
- What is the input voltage range of the ADM7172ACPZ-1.8-R7? The input voltage range is from 2.3 V to 6.5 V.
- What is the maximum output current of the ADM7172ACPZ-1.8-R7? The maximum output current is up to 2 A.
- What is the typical output noise of the ADM7172ACPZ-1.8-R7? The typical output noise is 5 μV rms.
- What is the low dropout voltage of the ADM7172ACPZ-1.8-R7? The low dropout voltage is 172 mV at 2 A load.
- What are the package dimensions of the ADM7172ACPZ-1.8-R7? The package is an 8-lead, 3 mm × 3 mm LFCSP.
- How does the ADM7172ACPZ-1.8-R7 handle thermal overload? It includes thermal overload protection that limits the junction temperature to a maximum of 150°C.
- What is the quiescent current of the ADM7172ACPZ-1.8-R7 at full load? The quiescent current at full load is typically 4.8 mA.
- Can the output voltage of the ADM7172ACPZ-1.8-R7 be adjusted? Yes, the ADM7172 offers both fixed and adjustable output voltage options.
- What is the shutdown current of the ADM7172ACPZ-1.8-R7? The shutdown current is typically 0.25 μA.
- What type of capacitors are recommended for use with the ADM7172ACPZ-1.8-R7? Good quality ceramic capacitors with X5R or X7R dielectrics are recommended.
