MIC2920A-3.3BT

Product Overview

Category

The MIC2920A-3.3BT belongs to the category of voltage regulators.

Use

This product is commonly used in electronic circuits to regulate and stabilize the output voltage.

Characteristics

• Voltage Output: 3.3V
• Package Type: TO-220
• Essence: Low dropout voltage regulator
• Packaging/Quantity: Available in tape and reel packaging, with a quantity of 1000 units per reel.

Specifications

The MIC2920A-3.3BT has the following specifications:

• Input Voltage Range: 4.5V to 26V
• Dropout Voltage: 380mV at 100mA
• Output Current: Up to 500mA
• Line Regulation: 0.04% (typical)
• Load Regulation: 0.1% (typical)
• Quiescent Current: 75µA (typical)

Pin Configuration

The pin configuration of the MIC2920A-3.3BT is as follows:

```

---

| | --| VIN GND |-- --| VOUT ADJ |-- |___________| ```

• VIN: Input voltage pin
• GND: Ground pin
• VOUT: Output voltage pin
• ADJ: Adjustable pin (used for fine-tuning the output voltage)

Functional Features

The MIC2920A-3.3BT offers the following functional features:

• Low dropout voltage: The regulator can maintain a stable output voltage even when the input voltage is close to the desired output voltage.
• Overcurrent protection: The device includes built-in protection against excessive current, preventing damage to the regulator and the connected circuitry.
• Thermal shutdown: In case of excessive temperature, the regulator automatically shuts down to prevent overheating and potential damage.
• Adjustable output: The ADJ pin allows for fine-tuning the output voltage, providing flexibility in various applications.

Advantages and Disadvantages

Advantages

• Low dropout voltage ensures efficient regulation even with small input-output differentials.
• Overcurrent protection safeguards the regulator and connected components from damage.
• Thermal shutdown feature prevents overheating and extends the lifespan of the device.
• Adjustable output voltage allows for customization according to specific requirements.

Disadvantages

• Limited maximum output current of 500mA may not be suitable for high-power applications.
• The TO-220 package may require additional heat sinking for optimal thermal performance in certain scenarios.

Working Principles

The MIC2920A-3.3BT operates based on a linear voltage regulation principle. It uses a pass transistor to regulate the output voltage by adjusting the resistance between the input and output pins. The regulator compares the output voltage with a reference voltage and adjusts the pass transistor accordingly to maintain a stable output voltage.

Detailed Application Field Plans

The MIC2920A-3.3BT finds application in various electronic systems, including but not limited to:

1. Power supply modules for microcontrollers and digital circuits.
2. Battery-powered devices requiring stable voltage levels.
3. Communication equipment and networking devices.
4. Automotive electronics, such as infotainment systems and engine control units.
5. Industrial control systems and automation equipment.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the MIC2920A-3.3BT include:

1. LM1117-3.3: A popular low dropout voltage regulator with a fixed 3.3V output.
2. LT1763-3.3: A high-performance regulator with low dropout voltage and adjustable output.
3. NCP1117-3.3: A cost-effective option with a fixed 3.3V output and low dropout voltage.

These alternative models can be considered based on specific application requirements and desired features.

In conclusion, the MIC2920A-3.3BT is a voltage regulator with a fixed 3.3V output, low dropout voltage, and various protective features. It finds application in diverse electronic systems and offers advantages such as efficient regulation and adjustable output voltage. However, it has limitations in terms of maximum output current and thermal performance. Alternative models are available to cater to different needs within the voltage regulator category.