MIC4574YN

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: High efficiency, low dropout voltage
• Package: TO-220
• Essence: Linear regulator
• Packaging/Quantity: Tube packaging, 50 units per tube

Specifications

• Input Voltage Range: 4.5V to 16V
• Output Voltage Range: 1.25V to 15V
• Maximum Output Current: 1.5A
• Dropout Voltage: 0.6V at 1A
• Line Regulation: 0.02%/V
• Load Regulation: 0.04%/A
• Quiescent Current: 120µA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The MIC4574YN has a standard TO-220 package with three pins:

1. Pin 1 (VIN): Input voltage pin
2. Pin 2 (GND): Ground reference pin
3. Pin 3 (VOUT): Output voltage pin

Functional Features

• High efficiency: The MIC4574YN utilizes a low dropout voltage design, resulting in minimal power dissipation and high efficiency.
• Fast transient response: The voltage regulator quickly responds to changes in load conditions, ensuring stable output voltage.
• Overcurrent protection: The device incorporates overcurrent protection circuitry to safeguard against excessive current flow.
• Thermal shutdown: In case of excessive temperature, the regulator automatically shuts down to prevent damage.

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power dissipation - Wide input voltage range allows for versatile applications - Fast transient response ensures stability during load variations

Disadvantages: - Limited maximum output current of 1.5A - Dropout voltage of 0.6V may not be suitable for low voltage applications

Working Principles

The MIC4574YN is a linear voltage regulator that operates by maintaining a constant output voltage regardless of changes in input voltage or load conditions. It achieves this through the use of a pass transistor and feedback circuitry. The pass transistor adjusts its resistance to regulate the output voltage, while the feedback circuit continuously monitors the output voltage and adjusts the pass transistor accordingly.

Detailed Application Field Plans

The MIC4574YN finds applications in various fields, including:

1. Power supplies: It can be used as a voltage regulator in power supply circuits for electronic devices.
2. Automotive electronics: The regulator's wide operating temperature range makes it suitable for automotive applications.
3. Industrial equipment: It can be employed in industrial control systems and automation equipment.
4. Telecommunications: The regulator can be utilized in telecommunications equipment such as routers and switches.

Detailed and Complete Alternative Models

Some alternative models to the MIC4574YN include:

1. LM317: A popular linear voltage regulator with adjustable output voltage.
2. LT1085: A high current, low dropout voltage regulator.
3. LM7805: A fixed 5V voltage regulator commonly used in electronic circuits.

These alternatives offer similar functionality and can be considered based on specific requirements.

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