Overview
The ADM7172ACPZ-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 2.3 V to 6.5 V and provides up to 2 A of output current. It is available in an 8-lead LFCSP (3mm x 3mm with EP) package and supports a temperature range of -40°C to 125°C. The device is known for its ultralow noise, high power supply rejection ratio (PSRR), and fast transient response, making it suitable for a variety of applications requiring stable and efficient voltage regulation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.3 to 6.5 | V |
| Output Current | Up to 2 | A |
| Output Voltage Options | 1.2 V to 5 V (fixed), adjustable with external voltage divider | V |
| Package Type | 8-Lead LFCSP (3mm x 3mm with EP) | - |
| Temperature Range | -40 to 125 | °C |
| Current Limit | Typically 3 A | A |
| Thermal Shutdown Temperature | Typically 150°C | °C |
| Enable Threshold | Typically 1.2 V (upper), 1.1 V (lower) | V |
Key Features
- Low Dropout Voltage: The ADM7172 features a low dropout voltage, ensuring efficient voltage regulation even when the input voltage is close to the output voltage.
- High Output Current: Capable of delivering up to 2 A of output current, making it suitable for high-current applications.
- Ultralow Noise and High PSRR: Offers ultralow noise and high power supply rejection ratio, ensuring stable output voltage under various input conditions.
- Fast Transient Response: Features a fast transient response, which is crucial for applications requiring quick recovery from load changes.
- Enable/Disable Functionality: Includes an enable/disable feature via the EN pin, allowing for easy control of the output voltage.
- Current Limit and Thermal Protection: Provides current limit protection and thermal shutdown to prevent device damage under overload conditions.
- Soft Start: Incorporates an internal soft start mechanism to limit inrush current during startup.
Applications
- Power Management in Portable Electronics: Suitable for powering various components in portable electronics such as smartphones, tablets, and laptops due to its low dropout voltage and high current capability.
- Industrial Control Systems: Can be used in industrial control systems where stable and efficient voltage regulation is critical.
- Medical Devices: Applicable in medical devices that require low noise and high reliability in their power supply.
- Aerospace and Defense: Its robust features make it a candidate for use in aerospace and defense applications where reliability and performance are paramount.
Q & A
- What is the input voltage range of the ADM7172ACPZ-R7?
The input voltage range is from 2.3 V to 6.5 V.
- How much output current can the ADM7172ACPZ-R7 provide?
The device can provide up to 2 A of output current.
- What are the available output voltage options for the ADM7172ACPZ-R7?
The device offers fixed output voltage options ranging from 1.2 V to 5 V, and it can be adjusted using an external voltage divider.
- What is the package type of the ADM7172ACPZ-R7?
The device is packaged in an 8-Lead LFCSP (3mm x 3mm with EP).
- What is the temperature range of the ADM7172ACPZ-R7?
The operating temperature range is from -40°C to 125°C.
- Does the ADM7172ACPZ-R7 have current limit protection?
Yes, it has current limit protection, typically limiting the output current to 3 A.
- What is the thermal shutdown temperature of the ADM7172ACPZ-R7?
The thermal shutdown temperature is typically 150°C.
- How does the enable/disable feature work on the ADM7172ACPZ-R7?
The device can be enabled or disabled via the EN pin, with typical thresholds of 1.2 V (upper) and 1.1 V (lower).
- Does the ADM7172ACPZ-R7 have soft start functionality?
Yes, it includes an internal soft start mechanism to limit inrush current during startup.
- What type of capacitors are recommended for use with the ADM7172ACPZ-R7?
Good quality ceramic capacitors with X5R or X7R dielectrics and a voltage rating of 6.3 V to 100 V are recommended.
