Overview
The ADP7105ARDZ series from Analog Devices Inc. is a family of high-performance, low-dropout (LDO) voltage regulators. These regulators are designed to operate from a wide input voltage range of 3.3 V to 20 V and provide up to 500 mA of output current. The ADP7105ARDZ is available in various fixed output voltage options, including 1.8 V, 3.3 V, and others, as well as an adjustable version. This LDO regulator features advanced CMOS architecture, ensuring high power supply rejection, low noise, and excellent line and load transient response.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 3.3 V to 20 V | V |
| Output Voltage | Fixed: 1.8 V, 3.3 V; Adjustable: 1.22 V to 19 V | V |
| Maximum Output Current | 500 mA | mA |
| Output Voltage Accuracy | ±1% | % |
| Quiescent Current | 900 μA (typical) | μA |
| Dropout Voltage | 350 mV (typical at 500 mA) | mV |
| Package Type | 8-lead SOIC, 8-lead LFCSP | - |
| Operating Temperature Range | -40°C to +125°C | °C |
| Thermal Shutdown Threshold | 150 °C | °C |
Key Features
- Enable Pin and Power Good Indicator: Allows for easy power management and system monitoring.
- Under-Voltage Lockout (UVLO): User-programmable UVLO for sequencing multiple power supplies.
- Protection Features: Over-current, over-temperature, and reverse-polarity protection for enhanced reliability.
- High Efficiency and Low Power Consumption: Compact surface-mount packages with low quiescent current.
- Fast Transient Response: Excellent line and load regulation with a small 1 µF ceramic output capacitor.
- Low Noise: Output noise voltage of 15 µV rms, independent of the output voltage.
Applications
- Industrial Equipment: Suitable for high-performance analog and mixed-signal circuits in industrial settings.
- Consumer Electronics: Used in a variety of consumer electronic devices requiring stable and efficient power supply.
- Telecommunications Equipment: Ideal for telecommunications equipment due to its high reliability and performance.
- Automotive Electronics: Applicable in automotive systems requiring robust and efficient power regulation.
- Portable Devices: Suitable for portable devices due to its compact package and low power consumption.
Q & A
- What is the input voltage range of the ADP7105ARDZ?
The input voltage range is from 3.3 V to 20 V.
- What are the available fixed output voltage options for the ADP7105ARDZ?
The fixed output voltage options include 1.8 V, 3.3 V, and others, as well as an adjustable version.
- What is the maximum output current of the ADP7105ARDZ?
The maximum output current is 500 mA.
- What protection features does the ADP7105ARDZ offer?
The device features over-current, over-temperature, and reverse-polarity protection.
- What is the typical quiescent current of the ADP7105ARDZ?
The typical quiescent current is 900 μA.
- What is the dropout voltage of the ADP7105ARDZ at 500 mA output current?
The dropout voltage is typically 350 mV at 500 mA output current.
- What are the available package types for the ADP7105ARDZ?
The device is available in 8-lead SOIC and 8-lead LFCSP packages.
- What is the operating temperature range of the ADP7105ARDZ?
The operating temperature range is from -40°C to +125°C.
- Does the ADP7105ARDZ have a power good indicator?
Yes, it includes a digital power-good output for system monitoring.
- Is the ADP7105ARDZ suitable for harsh environments?
Yes, it is designed with robust protection features and a compact package for reliable operation in harsh environments.
