MIC2940A-12BT

Product Overview

Category

The MIC2940A-12BT belongs to the category of voltage regulators.

Use

It is primarily used for regulating voltage in electronic circuits.

Characteristics

• High accuracy and low dropout voltage
• Low quiescent current
• Thermal shutdown protection
• Short circuit current limiting

Package

The MIC2940A-12BT comes in a TO-220 package.

Essence

This voltage regulator is designed to provide a stable output voltage despite fluctuations in input voltage or load conditions.

Packaging/Quantity

The MIC2940A-12BT is typically packaged in reels or tubes, with quantities varying depending on the supplier.

Specifications

• Input Voltage Range: 7V to 26V
• Output Voltage: 12V
• Dropout Voltage: 0.5V (typical)
• Quiescent Current: 75mA (typical)
• Maximum Output Current: 1A
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The MIC2940A-12BT 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

• High accuracy: The MIC2940A-12BT provides a precise and stable output voltage.
• Low dropout voltage: It can regulate the output voltage even when the input voltage is close to the desired output voltage.
• Thermal shutdown protection: The regulator shuts down if it exceeds the maximum temperature limit, preventing damage.
• Short circuit current limiting: It limits the current in case of a short circuit, protecting the circuitry.

Advantages and Disadvantages

Advantages

• High accuracy ensures reliable voltage regulation.
• Low dropout voltage allows for efficient power conversion.
• Thermal shutdown protection prevents overheating and damage.
• Short circuit current limiting protects the circuit from excessive current.

Disadvantages

• Limited maximum output current of 1A may not be suitable for high-power applications.
• The TO-220 package may require additional heat sinking for better thermal management.

Working Principles

The MIC2940A-12BT 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-12BT can be used in various applications, including: - Power supplies for microcontrollers and other digital circuits - Battery-powered devices requiring stable voltage - Automotive electronics - Industrial control systems

Detailed and Complete Alternative Models

Some alternative models to the MIC2940A-12BT include: - LM317: A popular adjustable voltage regulator with similar characteristics - LT1085: A high-current, low-dropout voltage regulator - LM1117: A low dropout voltage regulator available in various fixed output voltages

These alternative models offer different specifications and features, allowing users to choose the most suitable option for their specific requirements.

In conclusion, the MIC2940A-12BT is a voltage regulator known for its accuracy, low dropout voltage, and thermal protection. It finds applications in various fields and has alternative models that provide flexibility in design choices.