Overview
The ADM7171ACPZ-3.0-R7 is a high-performance, low dropout linear regulator (LDO) produced by Analog Devices Inc. This CMOS LDO operates from an input voltage range of 2.3V to 6.5V and provides up to 1A of output current, making it ideal for regulating high-performance analog and mixed-signal circuits. The device is known for its excellent line and load transient response, high power supply rejection ratio (PSRR), and low noise characteristics, which are crucial for noise-sensitive applications such as ADC and DAC circuits, precision amplifiers, PLLs/VCOs, and clocking ICs.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Input Voltage Range | 2.3V to 6.5V | |
| Output Voltage | 3V | |
| Output Current | Up to 1A | TA = 25°C |
| Operating Supply Current | 0.7mA typical | ILOAD = 0µA, TA = 25°C |
| Shutdown Current | 0.25μA typical | EN = GND, VIN = 5V, TA = 25°C |
| Output Voltage Accuracy | +1% maximum | ILOAD = 10mA, TJ = 25°C |
| Dropout Voltage | 42mV typical | ILOAD = 500mA, VOUT = 3V, TA = 25°C |
| Output Noise | 6μV rms typical | 10Hz to 100KHz, TA = 25°C |
| Power Supply Rejection Ratio (PSRR) | 60dB typical | 100KHz, VIN = 4V, VOUT = 3V, ILOAD = 1A, CSS = 0nF |
| Operating Junction Temperature Range | -40°C to +125°C | |
| Package Type | 8-lead LFCSP |
Key Features
- High output current up to 1A
- Low dropout voltage of 42mV typical at 500mA load
- High power supply rejection ratio (PSRR) of 60dB typical at 100KHz
- Low noise operation with 6μV rms typical output noise
- Fast transient response with a load transient response time of 1.5μs for a 1mA to 500mA load step
- Stable operation with a small 4.7μF ceramic output capacitor
- Precision enable and adjustable soft start
- Operating junction temperature range from -40°C to +125°C
Applications
The ADM7171ACPZ-3.0-R7 is suitable for a wide range of applications, including:
- Noise-sensitive components such as ADC and DAC circuits, precision amplifiers, PLLs/VCOs, and clocking ICs
- Communications and infrastructure
- Medical and healthcare devices
- Industrial and instrumentation systems
- High-performance audio systems
- Automotive electronics
- Portable devices
Q & A
- What is the input voltage range of the ADM7171ACPZ-3.0-R7?
The input voltage range is from 2.3V to 6.5V. - What is the maximum output current of the ADM7171ACPZ-3.0-R7?
The maximum output current is up to 1A. - What is the typical operating supply current of the ADM7171ACPZ-3.0-R7?
The typical operating supply current is 0.7mA at ILOAD = 0µA and TA = 25°C. - What is the shutdown current of the ADM7171ACPZ-3.0-R7?
The shutdown current is 0.25μA typical at EN = GND, VIN = 5V, and TA = 25°C. - What is the output voltage accuracy of the ADM7171ACPZ-3.0-R7?
The output voltage accuracy is +1% maximum at ILOAD = 10mA and TJ = 25°C. - What is the dropout voltage of the ADM7171ACPZ-3.0-R7?
The dropout voltage is 42mV typical at ILOAD = 500mA, VOUT = 3V, and TA = 25°C. - What is the output noise of the ADM7171ACPZ-3.0-R7?
The output noise is 6μV rms typical from 10Hz to 100KHz at TA = 25°C. - What is the power supply rejection ratio (PSRR) of the ADM7171ACPZ-3.0-R7?
The PSRR is 60dB typical at 100KHz, VIN = 4V, VOUT = 3V, ILOAD = 1A, and CSS = 0nF. - What is the operating junction temperature range of the ADM7171ACPZ-3.0-R7?
The operating junction temperature range is from -40°C to +125°C. - What package type is the ADM7171ACPZ-3.0-R7 available in?
The device is available in an 8-lead LFCSP package.
