MIC4684-3.3BM

Product Overview

Category

The MIC4684-3.3BM belongs to the category of voltage regulators.

Use

It is primarily used for regulating voltage in electronic circuits.

Characteristics

• Input Voltage Range: 4.5V to 16V
• Output Voltage: 3.3V
• Maximum Output Current: 500mA
• Dropout Voltage: 300mV
• Low Quiescent Current: 120µA
• Low Shutdown Current: 0.1µA
• Thermal Shutdown Protection
• Short Circuit Protection
• Overcurrent Protection

Package

The MIC4684-3.3BM comes in a small outline package (SOT-23-5).

Essence

This voltage regulator is designed to provide a stable and regulated output voltage of 3.3V, regardless of variations in the input voltage.

Packaging/Quantity

The MIC4684-3.3BM is typically packaged in reels containing 3000 units.

Specifications

• Input Voltage Range: 4.5V to 16V
• Output Voltage: 3.3V ±2%
• Maximum Output Current: 500mA
• Dropout Voltage: 300mV at 100mA
• Quiescent Current: 120µA
• Shutdown Current: 0.1µA
• Operating Temperature Range: -40°C to +125°C
• Package Type: SOT-23-5

Detailed Pin Configuration

The MIC4684-3.3BM has five pins arranged as follows:

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Pin 1: VIN (Input Voltage) Pin 2: GND (Ground) Pin 3: EN (Enable) Pin 4: BYP (Bypass) Pin 5: VOUT (Output Voltage)

Functional Features

• Voltage Regulation: The MIC4684-3.3BM ensures a stable output voltage of 3.3V, even with varying input voltages.
• Low Quiescent Current: With a quiescent current of only 120µA, it minimizes power consumption when in operation.
• Shutdown Mode: The regulator can be put into a low-power shutdown mode, reducing the current consumption to 0.1µA.
• Thermal and Short Circuit Protection: It incorporates thermal shutdown and short circuit protection mechanisms to prevent damage to the device.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows for flexibility in various applications.
• Low quiescent current reduces power consumption.
• Shutdown mode enables further power savings.
• Thermal and short circuit protection enhance reliability.

Disadvantages

• Maximum output current limited to 500mA, which may not be sufficient for high-power applications.
• Dropout voltage of 300mV may result in some power loss.

Working Principles

The MIC4684-3.3BM 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 accordingly to regulate the output at 3.3V. The device also incorporates protection features such as thermal shutdown and short circuit protection to ensure safe operation.

Detailed Application Field Plans

The MIC4684-3.3BM is commonly used in various electronic devices and systems that require a stable 3.3V power supply. Some typical application fields include:

1. Microcontrollers and microprocessors
2. Embedded systems
3. Battery-powered devices
4. Communication equipment
5. Industrial automation systems
6. Consumer electronics

Detailed and Complete Alternative Models

1. LM1117-3.3: A popular alternative with similar specifications and package type.
2. LT1763-3.3: Offers lower dropout voltage and higher maximum output current.
3. TPS73633: Provides a fixed 3.3V output with enhanced thermal performance.

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

In conclusion, the MIC4684-3.3BM is a voltage regulator that provides a stable 3.3V output voltage. It offers low quiescent current, shutdown mode, and protection features. While it has limitations in terms of maximum output current and dropout voltage, it finds applications in various electronic systems. Alternative models such as LM1117-3.3, LT1763-3.3, and TPS73633 can be considered as well.