MIC2937A-3.3BT

Product Overview

Category

The MIC2937A-3.3BT belongs to the category of voltage regulators.

Use

This product is primarily used for regulating voltage in electronic circuits.

Characteristics

• High accuracy: The MIC2937A-3.3BT provides a highly accurate output voltage.
• Low dropout voltage: It operates efficiently even when the input voltage is close to the desired output voltage.
• Low quiescent current: The regulator consumes minimal current when in standby mode.
• Thermal shutdown protection: It includes built-in protection against excessive heat.

Package

The MIC2937A-3.3BT comes in a compact TO-220 package, which allows for easy integration into various circuit designs.

Essence

The essence of this product lies in its ability to provide stable and regulated voltage to electronic devices, ensuring their proper functioning.

Packaging/Quantity

The MIC2937A-3.3BT is typically packaged in reels or tubes, with each reel/tube containing a specific quantity of regulators. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Output Voltage: 3.3V
• Input Voltage Range: 4.5V to 26V
• Dropout Voltage: 0.6V (typical)
• Quiescent Current: 120µA (typical)
• Maximum Output Current: 750mA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The MIC2937A-3.3BT has three pins:

1. Vin (Pin 1): This pin is used to connect the input voltage.
2. Vout (Pin 2): This pin provides the regulated output voltage.
3. GND (Pin 3): This pin is connected to the ground reference.

Functional Features

• Voltage Regulation: The MIC2937A-3.3BT ensures a stable output voltage of 3.3V, regardless of input voltage fluctuations.
• Current Limiting: It includes built-in current limiting protection to prevent damage to the regulator and connected devices.
• Thermal Shutdown: In case of excessive heat, the regulator shuts down to protect itself from damage.

Advantages and Disadvantages

Advantages

• High accuracy ensures precise voltage regulation.
• Low dropout voltage allows for efficient operation even with low input voltages.
• Low quiescent current minimizes power consumption in standby mode.
• Thermal shutdown protection prevents overheating and potential damage.

Disadvantages

• Limited maximum output current (750mA) may not be suitable for high-power applications.
• Input voltage range (4.5V to 26V) may restrict its use in certain scenarios.

Working Principles

The MIC2937A-3.3BT operates based on the principle of linear voltage regulation. It uses a feedback mechanism to compare the output voltage with a reference voltage and adjusts the internal circuitry to maintain a constant output voltage of 3.3V. The regulator achieves this by controlling the flow of current through its internal components.

Detailed Application Field Plans

The MIC2937A-3.3BT finds applications in various electronic systems that require a stable and regulated 3.3V power supply. Some common application fields include:

1. Microcontrollers: It can provide a reliable power source for microcontroller-based projects.
2. Embedded Systems: The regulator ensures consistent voltage supply to embedded systems, enhancing their performance and reliability.
3. Communication Devices: It is suitable for powering communication modules, such as Wi-Fi or Bluetooth modules, ensuring uninterrupted connectivity.
4. Industrial Control Systems: The regulator can be used in industrial control systems to maintain stable voltage levels for sensors, actuators, and other components.

Detailed and Complete Alternative Models

1. LM1117-3.3: A popular alternative with similar specifications and package type.
2. LT1763-3.3: Offers lower dropout voltage and higher maximum output current compared to MIC2937A-3.3BT.
3. TPS73633: Provides a wide input voltage range and low quiescent current, suitable for battery-powered applications.

These alternative models offer similar functionality and can be considered based on specific requirements and design constraints.

In conclusion, the MIC2937A-3.3BT is a voltage regulator that provides accurate and stable 3.3V output voltage. Its low dropout voltage, low quiescent current, and thermal shutdown protection make it suitable for various electronic applications. However, its limited maximum output current and input voltage range should be taken into consideration during system design.