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?