MIC39500-1.8BU

Product Overview

Category

The MIC39500-1.8BU belongs to the category of voltage regulators.

Use

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

Characteristics

• Voltage regulation: The MIC39500-1.8BU provides a stable output voltage.
• High efficiency: It operates with high efficiency, minimizing power losses.
• Low dropout voltage: The regulator can maintain a stable output even when the input voltage is close to the desired output voltage.
• Thermal shutdown protection: It includes built-in protection against excessive heat.

Package

The MIC39500-1.8BU comes in a standard TO-263 package.

Essence

The essence of this product lies in its ability to provide reliable and stable voltage regulation for various electronic applications.

Packaging/Quantity

Each package contains one MIC39500-1.8BU voltage regulator.

Specifications

• Input voltage range: 2.5V to 7V
• Output voltage: 1.8V
• Maximum output current: 5A
• Dropout voltage: 0.6V (typical)
• Operating temperature range: -40°C to +125°C

Detailed Pin Configuration

The MIC39500-1.8BU has three pins:

1. VIN (Input): This pin is connected to the input voltage source.
2. VOUT (Output): The regulated output voltage is obtained from this pin.
3. GND (Ground): This pin is connected to the ground reference.

Functional Features

• Voltage regulation: The MIC39500-1.8BU maintains a constant output voltage of 1.8V, regardless of variations in the input voltage or load conditions.
• Current limiting: It incorporates current limiting protection to prevent damage to the regulator and the connected circuitry in case of excessive current flow.
• Thermal protection: The regulator includes a thermal shutdown feature that disables the output when the temperature exceeds a safe threshold, preventing overheating and potential damage.

Advantages and Disadvantages

Advantages

• High efficiency ensures minimal power loss.
• Low dropout voltage allows for stable operation even with small input-output voltage differentials.
• Built-in thermal shutdown protection enhances reliability and safety.
• Suitable for a wide range of electronic applications.

Disadvantages

• Limited to a fixed output voltage of 1.8V.
• Requires external components (e.g., capacitors) for proper operation.

Working Principles

The MIC39500-1.8BU is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It compares the output voltage with a reference voltage and adjusts the pass transistor's resistance to maintain a constant output voltage of 1.8V. The regulator operates in a continuous feedback loop to ensure accurate voltage regulation.

Detailed Application Field Plans

The MIC39500-1.8BU finds application in various electronic systems, including but not limited to: - Power supplies for microcontrollers and digital circuits. - Battery-powered devices requiring stable voltage levels. - Automotive electronics. - Industrial control systems. - Communication equipment.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the MIC39500-1.8BU include: - LM1117-1.8: A popular 1.8V linear voltage regulator from Texas Instruments. - LT1763-1.8: A low dropout 1.8V voltage regulator from Linear Technology. - TPS7A4901-1.8: An ultra-low noise 1.8V voltage regulator from Texas Instruments.

These alternatives provide comparable voltage regulation capabilities and can be considered based on specific requirements and availability.

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