Overview
The ADM7172ACPZ-3.0-R7 is a CMOS, low dropout linear regulator (LDO) produced by Analog Devices Inc. This regulator is designed to operate from an input voltage range of 2.3 V to 6.5 V and can provide up to 2 A of output current. It features a compact 8-lead, 3 mm × 3 mm LFCSP package, making it suitable for applications requiring a small footprint and excellent thermal performance.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Input Voltage Range | 2.3 V to 6.5 V | |
| Output Voltage | Fixed: 3.0 V (for ADM7172ACPZ-3.0-R7) | |
| Output Current | Up to 2 A | |
| Output Noise | 5 μV rms | Independent of output voltage |
| Dropout Voltage | Typically 300 mV at 2 A | |
| Enable Threshold | 3.6 V with 300 mV hysteresis | |
| Current Limit | Typically 3 A | |
| Thermal Shutdown | Junction temperature limit: 150°C (typical) | |
| Package | 8-lead, 3 mm × 3 mm LFCSP |
Key Features
- High Power Supply Rejection and Low Noise: The ADM7172 provides excellent power supply rejection and low output noise of 5 μV rms, independent of the output voltage.
- Compact Package: Available in an 8-lead, 3 mm × 3 mm LFCSP package, offering excellent thermal performance.
- Soft Start Capability: Inrush current can be controlled by adjusting the start-up time via the soft start pin.
- Current Limit and Thermal Protection: Includes current limit protection (typically 3 A) and thermal shutdown to prevent overheating.
- Undervoltage Lockout: Internal undervoltage lockout circuit to disable the output voltage when the input voltage falls below a certain threshold.
- Enable Pin with Hysteresis: The enable pin has a threshold of 3.6 V with 300 mV hysteresis to prevent on/off oscillations due to noise.
Applications
- Portable Electronics: Suitable for battery-powered devices due to its low dropout voltage and high efficiency.
- Industrial Control Systems: Can be used in industrial control systems requiring stable and low-noise power supplies.
- Medical Devices: Appropriate for medical devices that need reliable and low-noise power regulation.
- Aerospace and Defense: Its robust thermal and current protection features make it suitable for aerospace and defense applications.
Q & A
- What is the input voltage range of the ADM7172ACPZ-3.0-R7?
The input voltage range is from 2.3 V to 6.5 V.
- What is the maximum output current of the ADM7172ACPZ-3.0-R7?
The maximum output current is up to 2 A.
- What is the output noise of the ADM7172?
The output noise is 5 μV rms, independent of the output voltage.
- How does the soft start feature work in the ADM7172?
The inrush current can be controlled by adjusting the start-up time via the soft start pin.
- What kind of thermal protection does the ADM7172 have?
The ADM7172 includes thermal shutdown, limiting the junction temperature to a maximum of 150°C (typical).
- What is the package type and size of the ADM7172ACPZ-3.0-R7?
The package is an 8-lead, 3 mm × 3 mm LFCSP.
- Does the ADM7172 have undervoltage lockout protection?
Yes, it includes an internal undervoltage lockout circuit to disable the output voltage when the input voltage falls below a certain threshold.
- How does the enable pin work on the ADM7172?
The enable pin has a threshold of 3.6 V with 300 mV hysteresis to prevent on/off oscillations due to noise.
- What are some typical applications for the ADM7172?
Typical applications include portable electronics, industrial control systems, medical devices, and aerospace and defense systems.
- What is the current limit protection of the ADM7172?
The ADM7172 has a current limit protection of typically 3 A.
