MIC4576-3.3BU

Product Overview

Category

The MIC4576-3.3BU belongs to the category of voltage regulators.

Use

It is commonly used to regulate and stabilize the output voltage in electronic circuits.

Characteristics

• Input Voltage Range: 4.5V to 16V
• Output Voltage: 3.3V
• Maximum Output Current: 1.5A
• Dropout Voltage: 0.6V at 1A
• Low Quiescent Current: 120µA
• Thermal Shutdown Protection
• Short Circuit Protection

Package

The MIC4576-3.3BU is available in a TO-263 package, also known as D2PAK.

Essence

This voltage regulator is designed to provide a stable and regulated output voltage of 3.3V, even when the input voltage varies.

Packaging/Quantity

The MIC4576-3.3BU is typically sold in reels or tubes, with a quantity of 1000 units per reel/tube.

Specifications

• Input Voltage Range: 4.5V to 16V
• Output Voltage: 3.3V ±2%
• Maximum Output Current: 1.5A
• Dropout Voltage: 0.6V at 1A
• Quiescent Current: 120µA
• Operating Temperature Range: -40°C to +125°C
• Package Type: TO-263 (D2PAK)
• Package Dimensions: 10.16mm x 9.65mm x 4.57mm

Detailed Pin Configuration

The MIC4576-3.3BU has three pins:

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

Functional Features

• Voltage Regulation: The MIC4576-3.3BU ensures a stable output voltage of 3.3V, regardless of input voltage fluctuations.
• Thermal Shutdown Protection: It incorporates a thermal shutdown feature that protects the device from overheating.
• Short Circuit Protection: The regulator is equipped with short circuit protection to prevent damage in case of a short circuit condition.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows for flexibility in various applications.
• Low quiescent current minimizes power consumption.
• Thermal shutdown and short circuit protection enhance reliability and safety.

Disadvantages

• Dropout voltage of 0.6V may limit its use in low voltage applications.
• Limited output current of 1.5A may not be suitable for high-power applications.

Working Principles

The MIC4576-3.3BU utilizes a feedback control mechanism to maintain a constant output voltage. It compares the actual output voltage with a reference voltage and adjusts the internal circuitry to regulate the output voltage at the desired level. The device also incorporates protection features such as thermal shutdown and short circuit protection to ensure safe operation.

Detailed Application Field Plans

The MIC4576-3.3BU can be used in various applications, including but not limited to:

1. Power Supply Modules: It can be employed in power supply modules to provide a stable 3.3V output voltage for microcontrollers, sensors, and other electronic components.
2. Battery-Powered Devices: The voltage regulator can be utilized in battery-powered devices to regulate the voltage supplied by batteries and ensure consistent performance.
3. Automotive Electronics: It finds application in automotive electronics, where it can regulate the voltage for various components such as infotainment systems, lighting modules, and control units.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the MIC4576-3.3BU include:

1. LM1117-3.3: A popular voltage regulator with a fixed 3.3V output voltage.
2. LT1763-3.3: A low dropout voltage regulator capable of providing a stable 3.3V output.
3. TPS73633: Another voltage regulator that offers a fixed 3.3V output voltage and low quiescent current.

These alternative models can be considered based on specific requirements and application constraints.

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