Overview
The ADM7170ACPZ-2.5-R7 from Analog Devices Inc. is a CMOS, low dropout linear regulator (LDO) designed for high performance and compact footprint. This regulator operates from an input voltage range of 2.3 V to 6.5 V and provides a fixed output voltage of 2.5 V with up to 500 mA of output current. The device is packaged in an 8-lead, 3 mm × 3 mm LFCSP, which offers excellent thermal performance and a small, low-profile design suitable for various applications requiring high current in a limited space.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.3 V to 6.5 V | V |
| Output Voltage | 2.5 V (fixed) | V |
| Output Current | Up to 500 mA | A |
| Output Noise (rms) | 5 μV | V |
| Package Type | 8-lead LFCSP (3 mm × 3 mm) | - |
| Enable Threshold | 3.6 V with 300 mV hysteresis | V |
| Current Limit | Typically 3 A | A |
| Thermal Overload Protection | Junction temperature limit: 150°C (typical) | °C |
Key Features
- Low Dropout Voltage: The ADM7170 features a low dropout voltage, making it suitable for applications where input voltage is close to the output voltage.
- Ultra Low Noise: The regulator has an output noise of 5 μV rms, which is independent of the output voltage, ensuring high signal integrity.
- High PSRR: The device offers high power supply rejection ratio (PSRR), which helps in maintaining a stable output voltage despite input voltage variations.
- Fast Transient Response: The ADM7170 has a fast transient response, ensuring quick recovery from load changes and maintaining output voltage stability.
- Soft Start and Inrush Current Control: The regulator includes an internal soft start feature to limit inrush current during startup, which can be adjusted using the soft start pin.
- Current Limit and Thermal Overload Protection: The device is protected against excessive power dissipation through current limit and thermal overload protection mechanisms).
Applications
The ADM7170ACPZ-2.5-R7 is suitable for a variety of applications that require a compact, high-performance LDO regulator. These include:
- Portable Electronics: Devices such as smartphones, tablets, and laptops benefit from the low dropout voltage and high current capability in a small footprint.
- Industrial Control Systems: The regulator's high PSRR and fast transient response make it ideal for industrial control systems that require stable power supply).
- Medical Devices: The ultra-low noise output makes the ADM7170 suitable for medical devices that require high signal integrity and low noise levels).
- Aerospace and Defense: The device's robust thermal and current protection features make it a reliable choice for aerospace and defense applications).
Q & A
- What is the input voltage range of the ADM7170ACPZ-2.5-R7?
The input voltage range is from 2.3 V to 6.5 V).
- What is the fixed output voltage of the ADM7170ACPZ-2.5-R7?
The fixed output voltage is 2.5 V).
- What is the maximum output current of the ADM7170ACPZ-2.5-R7?
The maximum output current is up to 500 mA).
- What is the output noise of the ADM7170ACPZ-2.5-R7?
The output noise is 5 μV rms).
- What type of package does the ADM7170ACPZ-2.5-R7 come in?
The device is packaged in an 8-lead, 3 mm × 3 mm LFCSP).
- Does the ADM7170ACPZ-2.5-R7 have thermal overload protection?
Yes, the device includes thermal overload protection that limits the junction temperature to 150°C (typical)).
- How does the soft start feature work on the ADM7170ACPZ-2.5-R7?
The soft start feature limits inrush current during startup and can be adjusted using the soft start pin).
- What is the enable threshold voltage of the ADM7170ACPZ-2.5-R7?
The enable threshold voltage is 3.6 V with a hysteresis of 300 mV).
- Can the output voltage of the ADM7170ACPZ-2.5-R7 be adjusted?
While the ADM7170ACPZ-2.5-R7 has a fixed output voltage, the ADM7170 series can be adjusted using an external voltage divider for other models).
- What are some typical applications for the ADM7170ACPZ-2.5-R7?
Typical applications include portable electronics, industrial control systems, medical devices, and aerospace and defense systems).
