Overview
The ADP7158ARDZ-1.2-R7 is a high-performance linear regulator produced by Analog Devices Inc. This regulator operates from an input voltage range of 2.3 V to 5.5 V and provides up to 2 A of output current. It is designed using an advanced proprietary architecture, which ensures high power supply rejection and ultralow noise. This makes the ADP7158 ideal for applications requiring excellent line and load transient response.
The device is available in various output voltages, with the ADP7158ARDZ-1.2-R7 specifically providing a 1.2 V output. It is packaged in a compact 10-lead, 3 mm × 3 mm LFCSP and 8-lead SOIC, offering excellent thermal performance and a small footprint.
Key Specifications
| Parameter | Symbol | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Input Voltage Range | VIN | 2.3 | 5.5 | V | ||
| Load Current | ILOAD | 2 | A | |||
| Operating Supply Current | IGND | ILOAD = 0 | 4.0 | 8.0 | mA | |
| ILOAD = 2 A | 9.0 | 14.0 | mA | |||
| Shutdown Current | IIN_SD | EN = GND | 0.2 | 4 | µA | |
| Output Noise (10 Hz to 100 kHz) | OUTNOISE | VOUT = 1.2 V to 3.3 V | 1.6 | µV rms | ||
| Output Noise (100 Hz to 100 kHz) | OUTNOISE | VOUT = 1.2 V to 3.3 V | 0.9 | µV rms | ||
| UnderVoltage Lockout (UVLO) Thresholds - Rising | UVLORISE | 2.22 | 2.29 | V | ||
| UnderVoltage Lockout (UVLO) Thresholds - Falling | UVLOFALL | 1.95 | 2.02 | V | ||
| UnderVoltage Lockout (UVLO) Hysteresis | UVLOHYS | 200 | mV |
Key Features
- High Power Supply Rejection Ratio (PSRR): Ensures excellent line and load transient response.
- Ultralow Noise: Total integrated noise of 0.9 µV rms from 100 Hz to 100 kHz and 1.6 µV rms from 10 Hz to 100 kHz.
- Compact Packaging: Available in 10-lead, 3 mm × 3 mm LFCSP and 8-lead SOIC packages, providing excellent thermal performance.
- Multiple Output Voltages: 16 standard output voltages between 1.2 V and 3.3 V, with the ADP7158ARDZ-1.2-R7 specifically providing 1.2 V.
- Low Shutdown Current: Typically 0.2 µA when the enable pin is grounded.
- Precision Enable Input: With logic high and low thresholds and hysteresis for reliable operation.
Applications
- High-Performance Analog Circuits: Ideal for applications requiring low noise and high PSRR, such as audio and video processing.
- Medical Devices: Suitable for medical equipment that demands low noise and high reliability.
- Industrial Control Systems: Used in systems that require stable and low-noise power supplies.
- Communication Equipment: Applicable in RF and baseband circuits where low noise is critical.
- Automotive Systems: Can be used in automotive electronics that require robust and low-noise power supplies.
Q & A
- What is the input voltage range of the ADP7158?
The input voltage range of the ADP7158 is from 2.3 V to 5.5 V.
- What is the maximum load current of the ADP7158?
The maximum load current of the ADP7158 is up to 2 A.
- What are the available output voltages for the ADP7158?
The ADP7158 is available in 16 standard output voltages between 1.2 V and 3.3 V, including 1.2 V, 1.3 V, 1.5 V, and others.
- What is the typical output noise of the ADP7158?
The typical output noise of the ADP7158 is 0.9 µV rms from 100 Hz to 100 kHz and 1.6 µV rms from 10 Hz to 100 kHz.
- What are the package options for the ADP7158?
The ADP7158 is available in 10-lead, 3 mm × 3 mm LFCSP and 8-lead SOIC packages.
- What is the shutdown current of the ADP7158 when the enable pin is grounded?
The shutdown current is typically 0.2 µA when the enable pin is grounded.
- What are the typical operating supply currents for the ADP7158?
The typical operating supply currents are 4.0 mA when ILOAD = 0 and 9.0 mA when ILOAD = 2 A.
- What is the under-voltage lockout (UVLO) threshold for the ADP7158?
The UVLO rising threshold is between 2.22 V and 2.29 V, and the falling threshold is between 1.95 V and 2.02 V.
- What are some common applications for the ADP7158?
The ADP7158 is commonly used in high-performance analog circuits, medical devices, industrial control systems, communication equipment, and automotive systems.
- How does the ADP7158 achieve high power supply rejection ratio (PSRR)?
The ADP7158 achieves high PSRR through its advanced proprietary architecture.
