MIC2940A-3.3BU

Product Overview

Category

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

Use

It is primarily used for regulating voltage in electronic circuits.

Characteristics

• Input Voltage Range: 6V to 26V
• Output Voltage: 3.3V
• Maximum Output Current: 1A
• Low Dropout Voltage: 40mV at 1A
• Thermal Shutdown Protection
• Short Circuit Current Limiting
• Adjustable Output Voltage with External Resistors

Package

The MIC2940A-3.3BU comes in a TO-263 package.

Essence

This voltage regulator is designed to provide a stable and regulated output voltage, making it suitable for various electronic applications.

Packaging/Quantity

The MIC2940A-3.3BU is typically packaged in reels or tubes, with a quantity of 1000 units per reel/tube.

Specifications

• Input Voltage Range: 6V to 26V
• Output Voltage: 3.3V
• Output Current: Up to 1A
• Dropout Voltage: 40mV at 1A
• Line Regulation: 0.01%/V
• Load Regulation: 0.04%/A
• Quiescent Current: 5mA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The MIC2940A-3.3BU has three pins:

1. Vin (Pin 1): Input voltage pin.
2. Vout (Pin 2): Output voltage pin.
3. GND (Pin 3): Ground pin.

Functional Features

• Low Dropout Voltage: The MIC2940A-3.3BU exhibits a low dropout voltage, ensuring efficient regulation even when the input voltage is close to the desired output voltage.
• Thermal Shutdown Protection: The regulator includes a thermal shutdown feature that protects it from overheating, preventing damage to the device.
• Short Circuit Current Limiting: In case of a short circuit, the MIC2940A-3.3BU limits the current to protect the circuit and prevent excessive power dissipation.
• Adjustable Output Voltage: The output voltage can be adjusted using external resistors, providing flexibility in various applications.

Advantages and Disadvantages

Advantages

• Stable and regulated output voltage.
• Low dropout voltage ensures efficient regulation.
• Thermal shutdown protection prevents overheating.
• Short circuit current limiting protects the circuit.
• Adjustable output voltage for flexibility.

Disadvantages

• Limited maximum output current (1A).
• Requires external resistors for adjusting the output voltage.

Working Principles

The MIC2940A-3.3BU is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It compares the reference voltage with the feedback voltage and adjusts the pass transistor accordingly to maintain a stable output voltage.

Detailed Application Field Plans

The MIC2940A-3.3BU finds applications in various electronic devices and systems, including: - Power supplies - Battery-powered devices - Embedded systems - Industrial control systems - Automotive electronics - Communication equipment

Detailed and Complete Alternative Models

Some alternative models to the MIC2940A-3.3BU include: - LM1117-3.3 - LT1086-3.3 - TPS79633

These models offer similar functionality and characteristics, providing alternatives for different design requirements.

In conclusion, the MIC2940A-3.3BU is a voltage regulator that provides stable and regulated output voltage for various electronic applications. With its low dropout voltage, thermal shutdown protection, and adjustable output voltage, it offers advantages in terms of efficiency and flexibility. However, it has limitations in terms of maximum output current and the need for external resistors for voltage adjustment. It finds applications in diverse fields such as power supplies, embedded systems, and automotive electronics. Alternative models like LM1117-3.3, LT1086-3.3, and TPS79633 can be considered based on specific design requirements.