MIC2178BWM

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - High efficiency - Low dropout voltage - Adjustable output voltage - Current limiting and thermal shutdown protection

Package: SOIC-8

Essence: The MIC2178BWM is a voltage regulator IC that provides a stable output voltage with high efficiency and low dropout voltage.

Packaging/Quantity: The MIC2178BWM is available in a standard SOIC-8 package. It is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 2.7V to 16V
• Output Voltage Range: 1.25V to 13.5V
• Maximum Output Current: 1.5A
• Dropout Voltage: 300mV at 1A
• Line Regulation: ±0.05%
• Load Regulation: ±0.1%
• Quiescent Current: 120µA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The MIC2178BWM has the following pin configuration:

```

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| | --| VIN GND |-- Pin 1: Ground --| VOUT NC |-- Pin 2: No Connection --| ADJ EN |-- Pin 3: Enable --| FB NC |-- Pin 4: No Connection |___________| ```

Functional Features

1. High Efficiency: The MIC2178BWM utilizes advanced circuitry to achieve high efficiency, minimizing power loss and maximizing battery life.

2. Low Dropout Voltage: With a dropout voltage as low as 300mV at 1A, the MIC2178BWM can maintain a stable output voltage even when the input voltage is close to the desired output voltage.

3. Adjustable Output Voltage: The output voltage of the MIC2178BWM can be easily adjusted using an external resistor divider network, allowing for flexibility in various applications.

4. Current Limiting and Thermal Shutdown Protection: The IC incorporates built-in current limiting and thermal shutdown protection mechanisms to prevent damage due to excessive current or temperature.

Advantages and Disadvantages

Advantages: - High efficiency design - Low dropout voltage - Adjustable output voltage - Built-in protection features

Disadvantages: - Limited maximum output current (1.5A) - Requires external components for proper operation

Working Principles

The MIC2178BWM is a linear voltage regulator that operates by comparing the output voltage with a reference voltage. It adjusts the pass transistor's resistance to maintain a stable output voltage despite changes in the input voltage or load conditions. The adjustable output voltage feature allows it to cater to different application requirements.

Detailed Application Field Plans

The MIC2178BWM is commonly used in various electronic devices and systems, including but not limited to: - Battery-powered devices - Portable audio players - Wireless communication devices - Industrial control systems - Automotive electronics

Detailed and Complete Alternative Models

1. LM317: A popular general-purpose adjustable voltage regulator.
2. LT1084: A high-current, low-dropout voltage regulator.
3. LM1117: A low dropout voltage regulator with fixed output voltage options.
4. MAX603: A precision, low-dropout voltage regulator with adjustable output voltage.

These alternative models offer similar functionality and can be considered as substitutes for the MIC2178BWM based on specific application requirements.

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