MIC2940A-3.3WU

Introduction

The MIC2940A-3.3WU is a voltage regulator belonging to the category of linear regulators. It is commonly used to provide a stable 3.3V output voltage from a higher input voltage source. This device is known for its high accuracy, low dropout voltage, and low quiescent current, making it suitable for various applications.

Basic Information Overview

• Category: Linear Regulator
• Use: Providing stable 3.3V output voltage
• Characteristics: High accuracy, low dropout voltage, low quiescent current
• Package: TO-263-3
• Essence: Voltage regulation
• Packaging/Quantity: Typically available in reels of 1000 units

Specifications

• Input Voltage Range: Up to 26V
• Output Voltage: 3.3V
• Maximum Output Current: 1A
• Dropout Voltage: 450mV at 1A
• Quiescent Current: 75µA
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The MIC2940A-3.3WU has three pins: 1. Input (VIN): Connects to the input voltage source. 2. Ground (GND): Connected to the ground reference. 3. Output (VOUT): Provides the regulated 3.3V output voltage.

Functional Features

• High Accuracy: Provides a precise 3.3V output voltage.
• Low Dropout Voltage: Ensures efficient operation even with small input-output differentials.
• Low Quiescent Current: Minimizes power consumption in standby or idle modes.

Advantages and Disadvantages

Advantages

• Precise voltage regulation
• Suitable for low-power applications
• Wide input voltage range

Disadvantages

• Limited maximum output current
• Higher dropout voltage compared to some modern alternatives

Working Principles

The MIC2940A-3.3WU operates by comparing the output voltage to a reference voltage and adjusting the pass element to maintain a stable 3.3V output. It utilizes a feedback loop to continuously regulate the output voltage, ensuring consistent performance.

Detailed Application Field Plans

This voltage regulator finds applications in various fields, including: - Battery-powered devices - Embedded systems - Sensor modules - Portable consumer electronics

Detailed and Complete Alternative Models

Some alternative models to the MIC2940A-3.3WU include: - LM1117-3.3 - LT1763-3.3 - L78M33CDT

In summary, the MIC2940A-3.3WU is a reliable linear regulator known for its precision and efficiency in providing a stable 3.3V output voltage. While it has certain limitations, its functional features and wide application field make it a popular choice for many electronic designs.

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