MIC2920A-3.3WS-TR

Product Overview

Category

The MIC2920A-3.3WS-TR 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: SOT-223
• Essence: Low dropout voltage regulator
• Packaging/Quantity: Tape and reel, 3000 units per reel

Specifications

The MIC2920A-3.3WS-TR has the following specifications:

• Input Voltage Range: 4.5V to 26V
• Dropout Voltage: 380mV at 100mA
• Output Current: 500mA
• Line Regulation: 0.04% typical
• Load Regulation: 0.1% typical
• Quiescent Current: 120µA typical
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The MIC2920A-3.3WS-TR has three pins:

1. VIN (Pin 1): Input voltage pin.
2. GND (Pin 2): Ground pin.
3. VOUT (Pin 3): Output voltage pin.

Functional Features

• Low dropout voltage: The MIC2920A-3.3WS-TR exhibits a low dropout voltage, ensuring efficient regulation even when the input voltage is close to the desired output voltage.
• High output current: With a maximum output current of 500mA, this voltage regulator can handle a wide range of applications.
• Excellent line and load regulation: The device maintains stable output voltage despite variations in input voltage or changes in load conditions.
• Thermal shutdown protection: The regulator includes built-in thermal shutdown protection to prevent damage due to excessive heat.

Advantages and Disadvantages

Advantages

• Low dropout voltage ensures efficient regulation.
• High output current capability for versatile applications.
• Excellent line and load regulation for stable performance.
• Thermal shutdown protection prevents damage from overheating.

Disadvantages

• Limited to a fixed output voltage of 3.3V, which may not be suitable for all applications requiring different voltage levels.
• SOT-223 package may require additional space on the PCB compared to smaller packages.

Working Principles

The MIC2920A-3.3WS-TR is a low dropout voltage regulator that uses a PNP pass transistor to regulate the output voltage. It operates by comparing the reference voltage with the feedback voltage derived from the output. The pass transistor adjusts its resistance to maintain a constant output voltage despite variations in input voltage or changes in load conditions.

Detailed Application Field Plans

The MIC2920A-3.3WS-TR finds applications in various electronic systems, including but not limited to:

1. Battery-powered devices: It can be used to regulate the voltage in portable electronics such as smartphones, tablets, and portable audio players.
2. Industrial control systems: The voltage regulator ensures stable power supply in industrial automation equipment, motor drives, and control panels.
3. Automotive electronics: It can be employed in automotive applications like infotainment systems, dashboard displays, and lighting controls.
4. Communication systems: The regulator is suitable for use in wireless routers, modems, and other communication devices to maintain a stable voltage supply.

Detailed and Complete Alternative Models

Some alternative models to the MIC2920A-3.3WS-TR include:

1. LM1117-3.3: A popular 3.3V voltage regulator with similar specifications and package options.
2. LT1763-3.3: A high-performance low dropout voltage regulator offering excellent line and load regulation.
3. NCP1117-3.3: A cost-effective alternative with a wide input voltage range and low dropout voltage.

These alternatives provide similar functionality and can be considered based on specific requirements and availability.

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