MIC2940A-3.3BU TR

Product Overview

Category

The MIC2940A-3.3BU TR belongs to the category of voltage regulators.

Use

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

Characteristics

• Voltage regulation: The MIC2940A-3.3BU TR provides a fixed output voltage of 3.3V.
• High current capability: It can handle a maximum output current of up to 1.5A.
• Low dropout voltage: The dropout voltage is typically as low as 0.6V at full load.
• Thermal shutdown protection: The regulator includes built-in thermal shutdown circuitry to prevent overheating.

Package

The MIC2940A-3.3BU TR is available in a TO-263 package, which is a surface-mount package with three pins.

Essence

The essence of this product lies in its ability to provide a stable and regulated output voltage for various electronic applications.

Packaging/Quantity

The MIC2940A-3.3BU TR is typically packaged in reels or tubes, containing a specific quantity of units per package. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Input voltage range: 4.5V to 26V
• Output voltage: 3.3V (fixed)
• Maximum output current: 1.5A
• Dropout voltage: 0.6V (typical) at full load
• Line regulation: 0.01%/V
• Load regulation: 0.04%/A
• Operating temperature range: -40°C to +125°C
• Package type: TO-263

Detailed Pin Configuration

The MIC2940A-3.3BU TR has three pins:

1. Vin (Pin 1): This pin is used to connect the input voltage.
2. GND (Pin 2): This pin is connected to the ground or common reference point.
3. Vout (Pin 3): The regulated output voltage is obtained from this pin.

Functional Features

• Voltage regulation: The MIC2940A-3.3BU TR maintains a constant output voltage of 3.3V, regardless of changes in the input voltage or load conditions.
• Current limiting: It includes current limiting circuitry to protect the regulator and the connected components from excessive current.
• Thermal shutdown: The regulator has built-in thermal shutdown protection, which activates when the temperature exceeds a certain threshold, preventing damage due to overheating.
• Short-circuit protection: In case of a short circuit, the regulator shuts down temporarily to protect itself and the connected circuitry.

Advantages and Disadvantages

Advantages

• High current capability allows it to power a wide range of electronic devices.
• Low dropout voltage minimizes power dissipation and improves efficiency.
• Built-in thermal shutdown and short-circuit protection enhance reliability and safety.
• Fixed output voltage simplifies circuit design and eliminates the need for external voltage regulation components.

Disadvantages

• The fixed output voltage may not be suitable for applications requiring variable voltage levels.
• The TO-263 package may require surface-mount soldering techniques, which can be challenging for some users.

Working Principles

The MIC2940A-3.3BU TR operates as a linear voltage regulator. It uses a pass transistor and feedback control circuitry to maintain a constant output voltage. When the input voltage exceeds the desired output voltage, the pass transistor adjusts its resistance to regulate the output voltage at the specified level. The feedback circuit continuously monitors the output voltage and adjusts the pass transistor accordingly.

Detailed Application Field Plans

The MIC2940A-3.3BU TR finds applications in various electronic systems, including but not limited to: - Power supplies for microcontrollers and digital circuits - Battery-powered devices requiring a stable voltage source - Automotive electronics - Industrial control systems - Communication equipment

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the MIC2940A-3.3BU TR include: - LM1117-3.3: A popular 3.3V linear voltage regulator with a TO-220 package. - LT1086-3.3: A low dropout 3.3V regulator with adjustable output voltage and TO-220 package. - TPS72333: A 3.3V fixed-output voltage regulator with a small SOT-223 package.

These alternative models can be considered based on specific requirements, availability, and compatibility with the application circuit.

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