Overview
The ADP2302ARDZ series from Analog Devices Inc. is a family of fixed frequency, current-mode control, step-down DC-DC regulators. These regulators are integrated with a power MOSFET and are designed to operate from an input voltage range of 3V to 20V, making them versatile for various applications. The 700 kHz operating frequency enables the use of small inductors and ceramic capacitors, providing a compact solution. The current-mode control architecture ensures fast and stable line and load transient performance. Additionally, these regulators feature integrated soft start circuitry to prevent large inrush currents at power-up and include a power-good signal for sequencing devices with enable inputs.
Key Specifications
| Parameter | Value | Description |
|---|---|---|
| Input Voltage Range | 3V to 20V | Operating input voltage range |
| Output Voltage | Adjustable (0.8V to 16V), Fixed (2.5V, 3.3V, 5V) | Output voltage options |
| Maximum Load Current | 2A (ADP2302), 3A (ADP2303) | Maximum current the regulator can supply |
| Switching Frequency | 700 kHz | Operating frequency of the regulator |
| Output Accuracy | ±1.5% over temperature | Accuracy of the output voltage over temperature range |
| Operating Temperature | -40°C to +125°C | Junction temperature range |
| Package Style | 8-lead SOIC-N-EP | Package type and pin configuration |
| Control Architecture | Current-mode control | Type of control architecture used |
| Protection Features | Thermal shutdown (TSD), Overcurrent protection (OCP), Undervoltage lockout (UVLO) | Integrated protection features |
Key Features
- Integrated Power MOSFET: Reduces the need for external components and enhances efficiency.
- Current-Mode Control: Provides fast and stable line and load transient performance.
- Soft Start Circuitry: Prevents large inrush currents at power-up.
- Power-Good Signal: Allows sequencing of devices with enable inputs.
- Precision Enable Threshold Voltage: Facilitates easy sequencing from other input/output supplies.
- Automatic PFM/PWM Mode: Switches between pulse-frequency modulation and pulse-width modulation to optimize efficiency at different load conditions.
- Protection Features: Includes thermal shutdown, overcurrent protection, and undervoltage lockout for robust operation.
Applications
- Intermediate Power Rail Conversion: Suitable for converting power rails in various systems.
- DC-to-DC Point of Load Applications: Ideal for point-of-load conversions in high-density boards.
- Communications and Networking: Used in communication and networking equipment for efficient power management.
- Industrial and Instrumentation: Applied in industrial and instrumentation settings where reliable power supply is crucial.
- Healthcare and Medical: Utilized in medical devices requiring precise and reliable power supply.
- Consumer Electronics: Employed in various consumer electronic devices for efficient power management.
Q & A
- What is the input voltage range of the ADP2302ARDZ?
The input voltage range is from 3V to 20V.
- What are the available output voltage options for the ADP2302ARDZ?
The output voltage can be adjustable (0.8V to 16V) or fixed at 2.5V, 3.3V, or 5V.
- What is the maximum load current for the ADP2302ARDZ?
The maximum load current is 2A for the ADP2302 and 3A for the ADP2303.
- What is the switching frequency of the ADP2302ARDZ?
The switching frequency is 700 kHz.
- What is the operating temperature range of the ADP2302ARDZ?
The operating temperature range is -40°C to +125°C.
- What type of control architecture does the ADP2302ARDZ use?
The ADP2302ARDZ uses current-mode control architecture.
- Does the ADP2302ARDZ have integrated protection features?
Yes, it includes thermal shutdown, overcurrent protection, and undervoltage lockout.
- What is the purpose of the soft start circuitry in the ADP2302ARDZ?
The soft start circuitry prevents large inrush currents at power-up.
- How does the power-good signal function in the ADP2302ARDZ?
The power-good signal allows sequencing of devices that have an enable input.
- What package style is the ADP2302ARDZ available in?
The ADP2302ARDZ is available in an 8-lead SOIC-N-EP package.
