MIC4684BM

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: High efficiency, low dropout voltage, compact size
• Package: 8-pin SOIC (Small Outline Integrated Circuit)
• Essence: Regulates input voltage to a desired output voltage level
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 1.2V to 3.3V
• Output Current: Up to 500mA
• Dropout Voltage: 120mV at 300mA
• Quiescent Current: 75µA
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The MIC4684BM has the following pin configuration:

```

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| | --| VOUT GND|-- Pin 1: Ground --| VIN EN |-- Pin 2: Enable --| FB NC |-- Pin 3: No Connection --| NC NC |-- Pin 4: No Connection --| NC NC |-- Pin 5: No Connection --| NC VOUT|-- Pin 6: Output Voltage --| NC VIN |-- Pin 7: Input Voltage --| NC NC |-- Pin 8: No Connection |___________| ```

Functional Features

• High Efficiency: The MIC4684BM offers high efficiency, minimizing power loss during voltage regulation.
• Low Dropout Voltage: With a dropout voltage as low as 120mV, it ensures stable output even when the input voltage is close to the desired output voltage.
• Compact Size: The 8-pin SOIC package allows for a compact and space-efficient design.

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power consumption.
• Low dropout voltage ensures stable output even with low input voltages.
• Compact size enables integration into small form factor devices.

Disadvantages

• Limited output current capacity (up to 500mA).
• No built-in protection features such as overcurrent or thermal shutdown.

Working Principles

The MIC4684BM is a voltage regulator that maintains a stable output voltage regardless of variations in the input voltage. It achieves this by using an internal feedback mechanism that compares the output voltage to a reference voltage. Any difference between the two is amplified and used to adjust the output voltage accordingly. This feedback loop ensures that the output voltage remains within the specified range, even under varying load conditions.

Detailed Application Field Plans

The MIC4684BM is commonly used in various applications where a stable and regulated voltage supply is required. Some typical application fields include:

1. Battery-Powered Devices: Portable electronic devices, such as smartphones, tablets, and portable media players, benefit from the MIC4684BM's low dropout voltage and high efficiency, extending battery life.

2. Embedded Systems: Microcontrollers, sensors, and other components in embedded systems often require a stable power supply. The MIC4684BM provides reliable voltage regulation in these applications.

3. Wireless Communication: Wireless communication modules, such as Wi-Fi or Bluetooth modules, rely on a stable power source. The MIC4684BM ensures consistent voltage supply, improving the performance and reliability of wireless communication systems.

4. Automotive Electronics: In automotive applications, the MIC4684BM can be used to regulate voltage for various components, including infotainment systems, lighting modules, and sensors.

Detailed and Complete Alternative Models

1. MIC4685BM: Similar to the MIC4684BM, but with a higher output current capacity of up to 1A.
2. MIC4686BM: A lower dropout voltage version of the MIC4684BM, offering improved performance in low input voltage scenarios.
3. MIC4687BM: Provides additional built-in protection features, such as overcurrent and thermal shutdown, for enhanced system reliability.

These alternative models offer different specifications and features, allowing designers to choose the most suitable option based on their specific requirements.

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