Overview
The ADM7170ACPZ-1.8-R7, produced by Analog Devices Inc., is a CMOS, low dropout linear regulator (LDO) designed to provide high performance and reliability in various electronic systems. This regulator operates from an input voltage range of 2.3 V to 6.5 V and can deliver up to 500 mA of output current. The ADM7170 is available in both fixed and adjustable output voltage options, with the ADM7170ACPZ-1.8-R7 specifically offering a fixed output voltage of 1.8 V. This component is packaged in an 8-lead, 3 mm × 3 mm LFCSP, making it a compact solution with excellent thermal performance.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Input Voltage Range | 2.3 V to 6.5 V | |
| Output Voltage | 1.8 V (fixed) | |
| Output Current | Up to 500 mA | |
| Output Noise | 5 μV rms | Independent of output voltage |
| Dropout Voltage | Typically 200 mV at 500 mA | |
| Enable Threshold | 3.6 V with 300 mV hysteresis | |
| Current Limit | Typically 3 A | |
| Thermal Overload Protection | Junction temperature limit: 150°C | |
| Package Type | 8-lead, 3 mm × 3 mm LFCSP |
Key Features
- Low Dropout Voltage: The ADM7170 features a low dropout voltage, typically 200 mV at 500 mA, ensuring efficient power regulation.
- Low Output Noise: The regulator offers a low output noise of 5 μV rms, independent of the output voltage, making it suitable for noise-sensitive applications.
- Soft Start Capability: The ADM7170 includes an internal soft start feature to limit inrush current during startup, which can be adjusted using an external capacitor.
- Current Limit and Thermal Overload Protection: The device is protected against excessive power dissipation with current limit and thermal overload protection, ensuring reliability and safety.
- Compact Package: The 8-lead, 3 mm × 3 mm LFCSP package provides excellent thermal performance and a small footprint, ideal for space-constrained designs.
Applications
The ADM7170ACPZ-1.8-R7 is suitable for a variety of applications requiring low noise, high current, and compact power regulation. These include:
- Portable Electronics: Smartphones, tablets, and other handheld devices benefit from its low dropout voltage and compact size.
- Industrial Control Systems: The regulator's robust thermal and current protection features make it reliable for industrial control and automation systems.
- Medical Devices: The low noise output is crucial for medical devices that require precise voltage regulation.
- Aerospace and Defense: The component's high reliability and thermal performance make it suitable for aerospace and defense applications.
Q & A
- What is the input voltage range of the ADM7170ACPZ-1.8-R7?
The input voltage range is from 2.3 V to 6.5 V.
- What is the fixed output voltage of the ADM7170ACPZ-1.8-R7?
The fixed output voltage is 1.8 V.
- What is the maximum output current of the ADM7170?
The maximum output current is up to 500 mA.
- What is the typical output noise of the ADM7170?
The typical output noise is 5 μV rms.
- How does the soft start feature work in the ADM7170?
The soft start feature limits inrush current during startup and can be adjusted using an external capacitor.
- What kind of protection does the ADM7170 have against excessive power dissipation?
The device has current limit and thermal overload protection.
- What is the package type of the ADM7170ACPZ-1.8-R7?
The package type is an 8-lead, 3 mm × 3 mm LFCSP.
- What are some typical applications for the ADM7170ACPZ-1.8-R7?
Typical applications include portable electronics, industrial control systems, medical devices, and aerospace and defense systems.
- How does the enable threshold work in the ADM7170?
The enable threshold is 3.6 V with a hysteresis of 300 mV to prevent on/off oscillations due to noise.
- What is the junction temperature limit for thermal overload protection in the ADM7170?
The junction temperature limit is 150°C.
