Overview
The ADP7182AUJZ-3.0-R7 is a low dropout (LDO) linear regulator produced by Analog Devices Inc. This CMOS-based regulator is designed to operate over a wide input voltage range of −2.7 V to −28 V and provides up to −200 mA of output current. It is particularly suited for regulating high-performance analog and mixed-signal circuits, offering high power supply rejection and low noise. The ADP7182 is available in both fixed output voltage and adjustable versions, making it versatile for various applications.
Key Specifications
| Parameter | Symbol | Test Conditions/Comments | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Input Voltage Range | VIN | −2.7 | −28 | V | ||
| Output Current | IOUT | −200 | mA | |||
| Operating Supply Current (IOUT = 0 mA) | IGND | −33 | −53 | μA | ||
| Operating Supply Current (IOUT = −10 mA) | IGND | −100 | −150 | μA | ||
| Operating Supply Current (IOUT = −200 mA) | IGND | −650 | −850 | μA | ||
| Shutdown Current | IGND-SD | EN = GND | −2 | −8 | μA | |
| Output Voltage Accuracy (Fixed Output Voltage) | VOUT | % | ||||
| Power Supply Rejection Ratio (PSRR) at 1 MHz | PSRR | VIN = −4.3 V, VOUT = −3 V | 45 | dB | ||
| Output Noise | 18 | μV rms |
Key Features
- Low Noise: The ADP7182 features an output noise of 18 μV rms, independent of the output voltage, making it suitable for high-performance analog and mixed-signal circuits.
- High Power Supply Rejection Ratio (PSRR): The regulator offers high PSRR values across various frequencies, ensuring stable output voltage despite input voltage variations.
- Wide Input Voltage Range: Operates from −2.7 V to −28 V, making it versatile for different application requirements.
- Adjustable and Fixed Output Voltages: Available in both fixed output voltage versions and an adjustable version that allows the output voltage to range from −1.22 V to −VIN + VDO via an external feedback divider.
- Small Footprint Packages: Available in 5-lead TSOT, 6- and 8-lead LFCSP packages for compact designs.
- Enable Logic Flexibility: The enable logic can interface with positive or negative logic levels, enhancing flexibility in system design.
Applications
- High-Performance Analog and Mixed-Signal Circuits: Ideal for regulating high-performance analog and mixed-signal circuits operating from −27 V down to −1.2 V rails.
- Industrial and Medical Devices: Suitable for use in industrial and medical devices where low noise and high PSRR are critical.
- Aerospace and Defense Systems: Can be used in aerospace and defense systems due to its robust performance over a wide temperature range.
- Automotive Systems: Applicable in automotive systems requiring stable voltage regulation under varying input conditions.
Q & A
- What is the input voltage range of the ADP7182?
The ADP7182 operates from −2.7 V to −28 V.
- What is the maximum output current of the ADP7182?
The maximum output current is −200 mA.
- What is the output noise of the ADP7182?
The output noise is 18 μV rms, independent of the output voltage.
- What are the available package types for the ADP7182?
The ADP7182 is available in 5-lead TSOT, 6- and 8-lead LFCSP packages.
- Can the ADP7182 be used with both positive and negative logic levels?
- What is the power supply rejection ratio (PSRR) of the ADP7182?
- Is the ADP7182 suitable for high-temperature applications?
- Can the output voltage of the ADP7182 be adjusted?
- What type of capacitors are recommended for use with the ADP7182?
- What are some typical applications of the ADP7182?
