Overview
The ADM7172ACPZ-1.3-R7 is a high-performance linear voltage regulator from Analog Devices Inc. This device is designed to provide a stable and regulated output voltage, making it suitable for a wide range of applications requiring low noise and high power supply rejection. The ADM7172 uses an advanced proprietary architecture that includes an error amplifier, a feedback voltage divider, and a PMOS pass transistor to achieve excellent line and load transient responses.
The regulator is available in various fixed output voltage options, with the ADM7172ACPZ-1.3-R7 specifically providing a fixed output voltage of 1.3V. It features an enable pin for turning the output on and off, a soft start function to limit inrush current, and internal protection mechanisms such as current limiting and thermal shutdown.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Part Number | ADM7172ACPZ-1.3-R7 |
| Package | 8-LFCSP-WD (3x3) |
| Voltage - Input (Max) | 6.5V |
| Voltage - Output (Fixed) | 1.3V |
| Current - Output | 2A |
| Current - Quiescent (Iq) | 2 mA |
| Current - Supply (Max) | 8.7 mA |
| Operating Temperature | -40°C ~ 125°C |
| PSRR | 60 dB ~ 20 dB (100 kHz ~ 1 MHz) |
| Voltage Dropout (Max) | 0.27V @ 2A |
| Protection Features | Over Current, Over Temperature |
Key Features
- High Power Supply Rejection Ratio (PSRR): Achieves 60 dB ~ 20 dB over the frequency range of 100 kHz to 1 MHz.
- Low Noise: Provides excellent noise performance, making it suitable for noise-sensitive applications.
- Enable and Soft Start Functions: The enable pin allows for turning the output on and off, while the soft start function limits inrush current during startup.
- Current Limiting and Thermal Shutdown: Protects the device against overcurrent and overheating conditions.
- Undervoltage Lockout: Disables the output voltage when the input voltage falls below a certain threshold.
- Adjustable Enable Thresholds: Allows for user-programmable enable thresholds to prevent on/off oscillations due to noise.
Applications
- Industrial Control Systems: Suitable for use in industrial control systems where stable and regulated voltage is crucial.
- Medical Devices: Can be used in medical devices that require low noise and high reliability.
- Communication Equipment: Ideal for communication equipment that demands stable power supply.
- Automotive Systems: Applicable in automotive systems that require robust and reliable voltage regulation.
- Consumer Electronics: Used in various consumer electronics where low noise and high PSRR are essential.
Q & A
- What is the output voltage of the ADM7172ACPZ-1.3-R7?
The output voltage of the ADM7172ACPZ-1.3-R7 is fixed at 1.3V.
- What is the maximum input voltage for the ADM7172ACPZ-1.3-R7?
The maximum input voltage is 6.5V.
- What is the maximum output current of the ADM7172ACPZ-1.3-R7?
The maximum output current is 2A.
- Does the ADM7172ACPZ-1.3-R7 have built-in protection features?
Yes, it includes overcurrent and overtemperature protection features.
- What is the operating temperature range of the ADM7172ACPZ-1.3-R7?
The operating temperature range is -40°C to 125°C.
- How does the enable pin function on the ADM7172ACPZ-1.3-R7?
The enable pin allows for turning the output on and off, with user-programmable thresholds to prevent oscillations.
- What is the quiescent current (Iq) of the ADM7172ACPZ-1.3-R7?
The quiescent current (Iq) is 2 mA.
- Does the ADM7172ACPZ-1.3-R7 have a soft start function?
Yes, it includes an internal soft start function to limit inrush current during startup.
- What is the package type of the ADM7172ACPZ-1.3-R7?
The package type is 8-LFCSP-WD (3x3).
- What is the PSRR of the ADM7172ACPZ-1.3-R7?
The PSRR is 60 dB ~ 20 dB over the frequency range of 100 kHz to 1 MHz.
